On April 20, 1914, the National Guard set fire to the UMWA strikers'
tent colony in Ludlow, Colorado, where miners had been living since
the Colorado Fuel and Iron Company, owned by John D. Rockefeller,
had evicted them from their homes.
Courtesy
Fred and Frank Hefferly Collection, Box 8-E2, Archives, University
of Colorado at Boulder Libraries.
Twenty-six people,
including eleven children and two mothers (one pregnant) died
in what became known as the Ludlow Massacre.
Courtesy
Denver Public Library, Western History Department, X-60451.