An April 1865 pho­to of the graves of Union sol­diers buried at the race course-turned-Confederate-prison where his­to­ri­ans believe the ear­li­est Memorial Day cer­e­mo­ny took place. Civil war pho­tographs, 1861 – 1865, Library of Congress, Prints and Photographs Division.Nowa­days, Memorial Day hon­ors vet­er­ans of all wars, but its roots are in America’s dead­liest con­flict, the Civil War. Approximately […]