"The Tents Lit With Matches" | Ludlow, Colorado, 1914
The film of this episode premieres February 23, 2027 on YouTube. The documents, the transcript and the sources are below now.
On April 20, 1914, the Colorado National Guard fought a day-long battle with striking coal miners at the Ludlow tent colony, north of Trinidad, and at dusk the tents burned. Two women and eleven children died in a pit under one of them. Five days later General John Chase appointed three of his own officers to investigate.
Transcript
Two reports

R001 Shoes of striker's children
Shoes of striker's children · 1914 · Denver Public Library · colorized 2026. View the original.
On April twentieth, nineteen fourteen, Colorado's soldiers burned a town of tents. Their own report says the oil was poured on by hand.

S27
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 21. View the original.
That sentence is on page twenty-one, signed by three officers of the Colorado National Guard. A federal report a year later said the rest. This is what each one admitted, and what happened to the one man who was convicted.

R002 Ludlow Tent Colony Before the Fire
Ludlow Tent Colony Before the Fire · 1914 · Wikimedia Commons · colorized 2026. View the original.
One thing first. Every photograph here is black and white. The color was put on by a computer this year — a good guess, not a record.
The colony

R003 Tents and cabins
Tents and cabins · 1913 · Denver Public Library · colorized 2026. View the original.
Ludlow was a railroad siding on the plain below the coal canyons of Las Animas County, north of Trinidad. In September of nineteen thirteen the miners of southern Colorado walked out of the company camps.

R004 Ludlow teny colony group shot
Ludlow teny colony group shot · 1914 · Wikimedia Commons · colorized 2026. View the original.
The companies owned the camps, so the strikers had to leave them. The union pitched tents on leased ground at the canyon mouths. Ludlow was the largest colony.

R005 Ludlow striker family in front of tent
Ludlow striker family in front of tent · 1914 · Denver Public Library · colorized 2026. View the original.
The militia's report lists them: Greeks, Montenegrins, Bulgars, Serbians, Italians, Mexicans, Croatians. Only a few families, it says, were Americans. The federal report says twelve hundred people were there in April.

R007 Family at the Ludlow tent colony
Family at the Ludlow tent colony · 1913 · Denver Public Library · colorized 2026. View the original.
Another. The tents had board floors, and under many of the floors the families dug a pit — a cellar, for the cold and for the bullets.

R009 People at the Ludlow Tent Colony
People at the Ludlow Tent Colony · 1914 · Denver Public Library · colorized 2026. View the original.
Mother Jones, outside a tent at the colony with the organizer Mike Livoda. Ludlow sat in open country, and everything that happened there was in plain view of the railroad and the road.

R010 Row of homes and coal carts at Berwind, Colorado
Row of homes and coal carts at Berwind, Colorado · 1914 · Denver Public Library · colorized 2026. View the original.
Up the canyon was Berwind, a camp of the Colorado Fuel and Iron Company — the Rockefeller company, the largest operator in the state.

R011 View west from Water Tank Hill into Berwind Canyon, c. 1910-1920
View west from Water Tank Hill into Berwind Canyon, c. 1910-1920 · 1914 · Denver Public Library · colorized 2026. View the original.
The view west from a low rise the soldiers called Water Tank Hill, into Berwind canyon. Hold that hill in mind.

R013 Colorado National Guard Breaks Up Protesters Demanding Mother Jones's Release, Trinidad, 1914
Colorado National Guard Breaks Up Protesters Demanding Mother Jones's Release, Trinidad, 1914 · 1914 · Denver Public Library · colorized 2026. View the original.
In October the governor sent in the National Guard. By January it was breaking up marches in Trinidad. This one, on Main Street in Trinidad, was marching to free Mother Jones, whom the militia was holding.

R015 General Chase talking to reporter
General Chase talking to reporter · 1914 · Denver Public Library · colorized 2026. View the original.
The Guard's commander in the field was General John Chase. A congressional subcommittee came to Colorado that winter and asked him to explain the militia's conduct.

S32
Report on the Colorado Strike Investigation · H. Doc. 1630, 63d Cong. · 1915 · p. 16. View the original.
He refused, unless he could be promised that the miners' lawyers would not question him. The committee said no, and wrote that down.

S31
Report on the Colorado Strike Investigation · H. Doc. 1630, 63d Cong. · 1915 · p. 16. View the original.
Its conclusion, in the report to the House: "It seemed the militia was on the side of the operators in this controversy, and the evidence seems conclusively to prove such to have been the case."

S03
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 126. View the original.
The report's sentence for it: by April twentieth the Colorado National Guard "no longer offered even a pretense of fairness or impartiality," and its units in the field "had degenerated into a force of professional gunmen and adventurers."

R020 Lt. Karl Linderfelt on horseback near Ludlow
Lt. Karl Linderfelt on horseback near Ludlow · 1914 · Denver Public Library · colorized 2026. View the original.
The officer it says dominated that force was Lieutenant Karl Linderfelt, on horseback near Ludlow.

R022 Louis Tikas smiling for photograph
Louis Tikas smiling for photograph · 1914 · Denver Public Library · colorized 2026. View the original.
On the other side, Louis Teekas, who led the Greek strikers at Ludlow. The federal report calls him "a man of high intelligence" who did his utmost that morning to prevent the attack.

R023 Louis Tikas and John Lawson with miners
Louis Tikas and John Lawson with miners · 1914 · Denver Public Library · colorized 2026. View the original.
Teekas, in the white shirt, with John Lawson, the union's district leader, and miners at the colony. Remember Lawson too. He is the man who was convicted.
April 20

R058 Militia men with a machine gun
Militia men with a machine gun · 1914 · Denver Public Library · colorized 2026. View the original.
Monday, April twentieth. The day after Greek Easter. The militia had about thirty-five men at Ludlow, with reinforcements up the canyon. They had machine guns. The colony had been searched for weapons for weeks.

S04
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 126. View the original.
The federal report: "the first offensive movement was the occupation of a hill near the tent colony by militiamen in full view of the strikers, the planting of a machine gun there, and the exploding of two dynamite bombs."

R018 National Guard Position on Water Tank Hill near Ludlow, Colorado, 1914
National Guard Position on Water Tank Hill near Ludlow, Colorado, 1914 · 1914 · Denver Public Library · colorized 2026. View the original.
The Guard position on Water Tank Hill. The photograph is dated April twentieth.

R019 Colorado National Guard
Colorado National Guard · 1914 · Denver Public Library · colorized 2026. View the original.
The machine gun.

R025 Colorado National Guard with automatic rifle
Colorado National Guard with automatic rifle · 1914 · Denver Public Library · colorized 2026. View the original.
Guardsmen firing from the prone position. Who fired first is disputed in every account, including the federal one. What followed is not.

R059 Colorado National Guard member using automatic rifle
Colorado National Guard member using automatic rifle · 1914 · Denver Public Library · colorized 2026. View the original.
The fight ran all day. Strikers with rifles took positions in an arroyo and on the railroad cut. Hundreds of women and children ran for the hills, or a ranch house, or the pits under the tents.

S05
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 126. View the original.
At dusk the tents caught fire. The federal report says the militiamen fired them "with a torch."

R027 Ludlow tent colony fire (11191749246)
Ludlow tent colony fire (11191749246) · 1914 · Wikimedia Commons · colorized 2026. View the original.
What was left the next morning.

R029 Ruins of Ludlow heavily restored
Ruins of Ludlow heavily restored · 1914 · Library of Congress, Bain Collection · colorized 2026. View the original.
Iron bedsteads, stoves, and the stakes where the tents had been.

R030 Ludlow national guard destroyed camp
Ludlow national guard destroyed camp · 1914 · Wikimedia Commons · colorized 2026. View the original.
Every tent. The militia board later found that "all of the tents were burned on Monday night," and that the burning and the looting were finished before morning.

R031 Hole where bodies of 11 children and 2 women were recovered from after fire at Ludlow Tent Colony
Hole where bodies of 11 children and 2 women were recovered from after fire at Ludlow Tent Colony · 1914 · Denver Public Library · colorized 2026. View the original.
This is the pit. Under one tent, two women and eleven children had taken shelter. The tent burned over them.

S06
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 127. View the original.
The federal report, page one twenty-seven: "Eleven children and two women of the colony who had taken refuge in a hole under one of the tents were burned to death or suffocated after the tents had been fired."

S24
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 20. View the original.
The soldiers' own board measured the hole. Eight feet by six, by four and a half. It found the air in it could not have kept thirteen people alive for many hours. It argued they were dead before the fire.

R024 National Guardsmen in Ludlow, 20 April
National Guardsmen in Ludlow, 20 April · 1914 · Denver Public Library · colorized 2026. View the original.
Guardsmen inside the ruined colony. The Denver library dates the photograph April twentieth.

R035 Louis Tikas being arrested by militia in Colorado
Louis Tikas being arrested by militia in Colorado · 1914 · Denver Public Library · colorized 2026. View the original.
And Teekas. This photograph shows him being taken by the militia. He was a prisoner when he died.

S07
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 127. View the original.
The federal report: Teekas "was first seriously or mortally wounded by a blow on the head from the stock of a Springfield rifle in the hands of Lieutenant K. E. Linderfelt," and "then shot three times in the back by militiamen and mine guards."
The next morning
The Trinidad paper the next evening. "Twenty-five dead, three wounded." The toll, it said, of an all-day battle at Ludlow.
Its death list. Louis Teekas, leader of the Ludlow tent colony. Frank Snyder, twelve-year-old son of William Snyder. A private of Company A. Then, under "reported dead": Mrs. Chavez and two children. Mrs. Costa and two children. Mrs. Pedronini and two children.
"Louie the Greek killed in flight when fire burns tents." That was the militia's version, and the paper ran it.
It also ran this: "Four women and ten children perished from suffocation by smoke when the fire swept through the Ludlow tent colony last night."
And on the same page, an editorial. "The battle in the Ludlow hills yesterday and its attendant loss of life may be laid at the door of a lying union press."
Denver read it differently. The Express, April twenty-second: "Militia fired tents soaked with oil, coroner is told."
And the day before: "Fiends shoot women and children after applying torch to tent homes."
Ten days

R038 Southwestern tipple after the battle
Southwestern tipple after the battle · 1914 · Denver Public Library · colorized 2026. View the original.
The miners armed. For ten days they attacked the mine camps up and down the canyons. The Southwestern tipple.

R039 Empire Mine tipple after the battle
Empire Mine tipple after the battle · 1914 · Denver Public Library · colorized 2026. View the original.
The Empire mine tipple, after the battle there.

R042 Armed miners
Armed miners · 1914 · Denver Public Library · colorized 2026. View the original.
Strikers under arms, wearing bandoliers.

R043 Armed miners at tent colony
Armed miners at tent colony · 1914 · Denver Public Library · colorized 2026. View the original.
Miners under arms at the colony. The federal report puts the whole war's dead at more than fifty, including the twenty-one at Ludlow.

S08
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 137. View the original.
The federal report's judgment on the State: its military arm "had acted, not as an agent of the commonwealth, but as an agent of one of the parties in interest — as an agent, that is, of the coal operators."

R044 Federal troops arrive in Ludlow, Colorado
Federal troops arrive in Ludlow, Colorado · 1914 · Denver Public Library · colorized 2026. View the original.
At the end of the month the United States Army came in, and the militia went home. Federal cavalry arriving at Ludlow.
Trinidad

R046 Coffins of Ludlow victims
Coffins of Ludlow victims · 1914 · Denver Public Library · colorized 2026. View the original.
The coffins, at the Catholic church in Trinidad.

R048 Funeral of Louis Tikas, Trinidad, Colorado
Funeral of Louis Tikas, Trinidad, Colorado · 1914 · Denver Public Library · colorized 2026. View the original.
The funeral of Louis Teekas.
In Denver, a thousand women marched on the Capitol. The Express: "Punish the guilty for Ludlow massacre, cry women, one thousand strong, many with babies in arms, who storm Capitol and order Ammons to ask for U.S. troops."
Governor Ammons asked. Within the week the headline was: "U.S. troops end ten days' war in coal fields."
The soldiers' report

R036 Capt. Philip Vancise, (Colo. Militia Commission,) Maj. E.J. Boughton, Capt. W.C. Danks
Capt. Philip Vancise, (Colo. Militia Commission,) Maj. E.J. Boughton, Capt. W.C. Danks · 1914 · Library of Congress, Bain Collection · colorized 2026. View the original.
Now the two reports. The first was written by the Guard about itself. On April twenty-fifth, General Chase appointed three of his own officers as a board — a major who was the district's judge advocate and two captains of the First Infantry.

S21
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 5. View the original.
Their order was to inquire into the causes of the battle, "with special reference to the death of women and children, the killing of Martin, Teekas, Filer and others, the burning of the tent colony and the claim that the tents were looted."

S22
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 5. View the original.
They examined the officers and soldiers under oath. The strikers, they wrote, declined to appear, because the inquiry was not public.

S20
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · title. View the original.
Their report is fifty pages, printed in Denver. It blames the Greeks. It says the battle was planned by the strikers for their Easter and fell a day late by accident.

S23
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 19. View the original.
It calls the rescue of women from the burning tents by Linderfelt and Captain Carson "truly heroic."

S25
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 20. View the original.
And then, on page twenty, it says this. By the time the tents burned, the men in the colony — uniformed guardsmen, Troop A in civilian clothes, and mine guards — "had passed out of their officers' control, had ceased to be an army and had become a mob."

S26
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 21. View the original.
Page twenty-one. "We find that the tents were not all of them destroyed by accidental fire. Men and soldiers swarmed into the colony and deliberately assisted the conflagration by spreading the fire from tent to tent."

S27
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 21. View the original.
"So deliberate was this burning and looting that we find that cans of oil found in the tents were poured upon them and the tents lit with matches."

R034 Militia after disaster
Militia after disaster · 1914 · Denver Public Library · colorized 2026. View the original.
Clothes, bedding, jewelry, bicycles, tools, taken from the tents and carried away. This is the militia writing about the militia.

S28
Ludlow: Report of the Special Board of Officers · Colorado National Guard · May 2, 1914 · p. 28. View the original.
Its recommendations: a court-martial for the killing of Teekas and the burning of the colony, and a permanent state constabulary.
The federal report

R053 Officer reading newspaper
Officer reading newspaper · 1914 · Denver Public Library · colorized 2026. View the original.
The court-martial met. Linderfelt was found guilty of striking Teekas with his rifle stock. A doctor at the inquest said that blow could itself have killed him.

S09
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 137. View the original.
The federal report, page one thirty-seven: "The courtmartial assessed as punishment a trifling demotion in rank."

S01
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · title page. View the original.
That report was written for the United States Commission on Industrial Relations by George West, and published in nineteen fifteen. Chapter four is the militia. Chapter five is called "The Ultimate Responsibility."

S10
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 138. View the original.
On the militia, it reaches for the Declaration of Independence — the charge against the King, "for protecting them, by a mock trial, from punishment for any murders which they should do on the inhabitants of these states."

S11
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 151. View the original.
On responsibility, it names John D. Rockefeller Junior, in New York. Before Ludlow, it says, his letters of encouragement to the company's officers in Denver were enough.

S12
George P. West, Report on the Colorado Strike · U.S. Commission on Industrial Relations · 1915 · p. 151. View the original.
After Ludlow he hired a publicity man, Ivy Lee of the Pennsylvania Railroad, and paid him from his own pocket to send bulletins to the nation under the operators' name.
The one conviction

C01
Lawson v. People, 63 Colo. 270 (April 1917) · headnote. View the original.
No militiaman was convicted of a killing at Ludlow. One man was convicted of one — a striker.

C02
Lawson v. People, 63 Colo. 270 (April 1917) · p. 271. View the original.
John Lawson, the union leader in the photograph with Teekas. The Colorado Supreme Court's own summary: charged with the murder of John Nimmo — a mine guard, the federal report says, killed in a fight in October. On May third, nineteen fifteen, "a jury found him guilty of murder in the first degree, and fixed the punishment at imprisonment for life."

C03
Lawson v. People, 63 Colo. 270 (April 1917) · p. 275. View the original.
The court reversed it in April of nineteen seventeen. The new Attorney General had confessed error — the trial judge should not have sat. "The judgment is reversed."
What is still buried

R054 Ruins of Ludlow restored
Ruins of Ludlow restored · 1914 · Library of Congress, Bain Collection · colorized 2026. View the original.
So the record stands like this. A state report that admits the oil and the matches. A federal report that names the Guard and the man in New York. One demotion. One life sentence, thrown out.

R055 Ruins of Ludlow tent colony
Ruins of Ludlow tent colony · 1914 · Denver Public Library · colorized 2026. View the original.
The federal troops were withdrawn in December of nineteen fourteen. The tents did not go back to Ludlow.

R001 Shoes of striker's children
Shoes of striker's children · 1914 · Denver Public Library · colorized 2026. View the original.
And the shoes. Someone photographed them in nineteen fourteen and wrote on the negative: shoes of strikers' children, from Ludlow, Colorado.

R002 Ludlow Tent Colony Before the Fire
Ludlow Tent Colony Before the Fire · 1914 · Wikimedia Commons · colorized 2026. View the original.
Sources
- George P. West, *Report on the Colorado Strike*, United States Commission on Industrial Relations, Washington, 1915. Federal document, public domain. Internet Archive scan `reportoncolorado00unitrich` (leaf = printed page + 5); every quoted line read off the page image at 2,500 px. https://archive.org/details/reportoncolorado00unitrich - p. 104: Linderfelt "accepted a deputy sheriff's commission and took charge of a force of mine guards"; "a professional soldier and machine gun operator, with a record of service in the Philippines and the Mexican revolution … belligerent, hot tempered, domineering and brutal." - p. 118–119: the State Federation of Labor committee's finding, errors "from pitiful, puerile blunders to the grossest atrocities"; "The pretense that the leaders of the militia have been impartial is absurd." - p. 126: "Thus, by April 20th the Colorado National Guard no longer offered even a pretense of fairness or impartiality, and its units in the field had degenerated into a force of professional gunmen and adventurers who were economically dependent on and subservient to the will of the coal operators"; twelve hundred in the colony, Linderfelt's force "not more than thirty-five men"; "On April 20th militiamen destroyed the Ludlow Tent Colony, killing five men and one boy with rifle and machine gun fire and firing the tents with a torch." - p. 127: "Eleven children and two women … were burned to death or suffocated after the tents had been fired"; "the militiamen became an uncontrolled mob and looted the tents"; Tikas struck with a Springfield rifle stock by Linderfelt "and then shot three times in the back"; "the first offensive movement was the occupation of a hill … the planting of a machine gun there, and the exploding of two dynamite bombs." - p. 135: "Twenty-four hours later the federal troops arrived and all fighting ceased. During the ten days of fighting at least fifty persons had lost their lives, including the twenty-one killed at Ludlow." - p. 137: the militia "had acted, not as an agent of the commonwealth, but as an agent of one of the parties in interest"; Linderfelt court-martialed, "The courtmartial assessed as punishment a trifling demotion in rank." - p. 138: the Declaration of Independence, "For protecting them, by a mock trial, from punishment for any murders." - p. 151: Rockefeller "employed a publicity expert and advanced him money from his personal funds … Mr. Ivy L. Lee, publicity agent for the Pennsylvania railroad." - p. 20 (note) / p. 98: John Nimmo "a mine guard" killed by strikers; federal troops "withdrawn in December, 1914."
- *Ludlow: Being the Report of the Special Board of Officers Appointed by the Governor of Colorado to Investigate and Determine the Facts with Reference to the Armed Conflict between the Colorado National Guard and Certain Persons Engaged in the Coal Mining Strike at Ludlow, Colorado, April 20, 1914*, Denver, 1914 (Boughton, Danks, Van Cise). Public domain (1914). Internet Archive `ludlowbeingrepor00colorich` (leaf = printed page + 7). https://archive.org/details/ludlowbeingrepor00colorich - p. 5–6: appointed April 25, 1914 "to inquire into the causes of the battle … with special reference to the death of women and children, the killing of Martin, Tikas, Filer and others, the burning of the tent colony and the claim that the tents were looted"; strikers "declined to give us any information, upon the ground that our inquiry was not publicly conducted." - p. 7: the colony "for the most part Greeks, Montenegrins, Bulgars, Servians, Italians, Mexicans, Tyroleans, Croatians, Austrians, Savoyards"; "only a few families were Americans." - p. 19: the rescue "truly heroic." - p. 20: "two women and eleven children, all dead. This chamber of death measured in feet 8x6x4½"; "they died of suffocation hours before the tents caught fire"; the men "had ceased to be an army and had become a mob." - p. 21: "We find that the tents were not all of them destroyed by accidental fire. Men and soldiers swarmed into the colony and deliberately assisted the conflagration"; "cans of oil found in the tents were poured upon them and the tents lit with matches"; "all of the tents were burned on Monday night." - p. 28–29: recommendations — a general court martial "for the treatment and killing of prisoners, and the burning and looting of the tent colony"; a permanent state constabulary; Boughton's added recommendation against re-establishing the colony, "My brother officers do not feel the necessity for such a step."
- *Report on the Colorado Strike Investigation Made under House Resolution 387, Sixty-third Congress*, House Doc. 1630, Washington, 1915 (Foster, Evans, Sutherland). Federal document, public domain. Internet Archive `reportoncolorad00unit` (leaf = printed page + 5). https://archive.org/details/reportoncolorad00unit - p. 16: Chase "was given an opportunity to explain the acts of the militia, but refused to do so unless he could be assured that he would not be questioned by representatives of the miners"; "It seemed the militia was on the side of the operators in this controversy, and the evidence seems conclusively to prove such to have been the case."
- *Lawson v. People*, 63 Colo. 270, decided April 1917. Reporter volume scan from the Caselaw Access Project, static.case.law/colo/63.pdf (printed page = PDF page − 16). https://static.case.law/colo/63/cases/0270-01.json - p. 271: information filed February 15, 1915 charging the murder of John Nimmo; "on May 3, 1915, a jury found him guilty of murder in the first degree, and fixed the punishment at imprisonment for life"; the Attorney General "filed a confession of error." - p. 275: "The judgment is reversed."
- *The Chronicle-News*, Trinidad, Colo., April 21, 1914, p. 1. Public domain (1914); Chronicling America, Library of Congress, read off the 3,784-px scan. https://www.loc.gov/resource/sn90051521/1914-04-21/ed-1/?sp=1 - "25 Dead, 3 Wounded is Toll of All Day Battle at Ludlow"; the death-toll box (Tikus, Fyler, Costa, Snyder, Martin; reported dead Mrs. Chavez, Mrs. Malsovich, Mrs. Costa, Mrs. Pedronini and children); "'Louie the Greek' killed in flight when fire burns tents"; "The Ludlow tent colony, which since September 23 has sheltered 900 men, women and children"; "Four women and ten children perished from suffocation"; editorial "The Battle—The Victims—And Those Responsible": "may be laid at the door of a lying union press."
- *The Denver Express*, April 21, 22 and 30, 1914, front pages, photographed from the bound volume by the Denver Public Library (via DPLA / Wikimedia Commons). Public domain (1914). "Militia fired tents soaked with oil, coroner is told"; "Fiends shoot women and children after applying torch to tent homes"; "U.S. troops end ten days' war in coal fields." https://digital.denverlibrary.org/
- Photographs, 1913–1915: Library of Congress, Bain News Service glass negatives (LC-B2-3035, 3033, 3025 series — ruins of the Ludlow colony; the board of officers; Guard officers); Denver Public Library Western History Collection and History Colorado via the Digital Public Library of America and Wikimedia Commons (tent colony, families, militia positions on Water Tank Hill, Linderfelt, Tikas, Chavez's hole, Red Cross, the Ten Days' War, funerals in Trinidad, the women's march in Denver). All made 1913–1915 and public domain by age; captions quoted from the holding library's records. https://commons.wikimedia.org/wiki/Category:Ludlow_Massacre
- Colorization: every photograph is black and white. Color was added in 2026 with DDColor (open source) and audited with the channel's spot-fix pass; it is a computer's guess and not part of the record. The newspaper pages are not colorized.