Alexander Gardner 1867 Public school, Leavenworth, Kansas, 309 miles west of St. Louis, Mo. [Across the continent on the Union Pacific Railway, Eastern Division.]
Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s00026 (digital file from original photo, front) LC-DIG-stereo-2s00026 (digital file from original photo, back) LC-USZ62-27829 (b&w film copy neg. of half stereo)