HARVARD OBSERVATORY PHOTOS THROUGH a TELESCOPE - c. 1910 REAL PHOTO POSTCARDS - ASTRONOMY
Six 3.25" x 5.25" real photo postcards taken through a telescope around 1910. Written on the front of two of the cards is "Harvard College Obs., Cambridge, Mass." Each card has the name Enid written on the verso, occasionally with her address in Brooklyn, NY. The photos are all identified.....