Company Archives. The World Socialist Web Site A four-part series on the history of the massacre and its place in the history of the American working class. The Colorado Coal Field War Project An account of the strike and the assault by the Colorado State National Guard, published by University of Denver's Anthropology department. Phelps-Dodge Mine explosion, 1913. During the time of the Colorado Coalfields Strike (which included Ludlow) this mine in New Mexico exploded, killing 263 men, the second deadliest mine disaster in US history. It was owned by Rockefeller-in-law M. Hartley-Dodge, owner of Remington Arms. Ludlow Massacre – Historical Background Background material prepared by the Colorado Bar for the 2003 Colorado Mock Trial program The Ludlow Massacre on libcom.org/history The lyrics to Woodie Guthrie's "Ludlow Massacre" are here and the lyrics to Guthrie's closely related song about copper miners in Calumet, Michigan, "1913 Massacre", are here. The Virtual Oral/Aural History Archive Audio of an interview with Ludlow survivor Mary Thomas O'Neal in 1974. Historian Howard Zinn on the ludlow Massacre Caleb Crain, "There Was Blood: The Ludlow Massacre Revisited," The New Yorker January 19, 2009. Caleb Crain, "Notebook: The Ludlow Massacre Revisited," an annotated bibliography to the preceding article Interview with David Hawkins, nephew of Ludlow Massacre miners' lawyer, Horace Hawkins Hundredth Anniversary of the Ludlow Massacre , historian Jonathan Rees and author Jeff Biggers, The Real News, 2014.04.20 The Ludlow Massacre Still Matters. The New Yorker, April 18, 2014. 1914 in Colorado 1914 labor disputes and strikes 1918 establishments in Colorado 1918 sculptures April 1914 events Archaeological sites in Colorado Battles in Colorado Ludlow Coal Wars Colorado Mining Boom Colorado National Guard Granite sculptures in Colorado Greek-American history Labor disputes in Colorado Labor disputes led by the United Mine Workers of America Labor monuments and memorials Las Animas County, Colorado Law enforcement operations in the United States Mass murder in 1914 Mass murder in Colorado Mass murder in the United States Massacres in 1918 Massacres in the United States Military history of Colorado Mining in Colorado Monuments and memorials in Colorado National Historic Landmarks in Colorado National Register of Historic Places in Colorado Outdoor sculptures in Colorado Political repression in the United States Protest-related deaths Riots and civil disorder in Colorado Rockefeller family United Mine Workers of America Vandalized works of art in the United States Anti-union violence