



It is believed that the order in which they were taken was first unraveled in 2012 by this author in his ebook Abraham Lincoln at Gettysburg: A Review of Alexander Gardner’s Stereoscopic Photos (2012). Positive images of the three negatives appear below, courtesy of the Library of Congress. Three stereoscopic glass plate negatives taken at the Gettysburg Soldiers’ Cemetery dedication on Novemhave been credited to Alexander Gardner’s photographic team.
