#21 A portrait by Schneider from 1863
#22 Lower Yellowstone Falls photographed during the Hayden Expedition
#23 Ancient ruins at Canon de Chelle from 1873
#24 A photograph of "Bandits Roost" in Mulberry Street, 1888
#25 Fox Talbot's famous 1844 photograph, "The Haystack"
#26 A photograph of a woman seen from the back, circa 1862
#27 A historical portrait of the Maharani of Nepal
#28 Boston as seen by an eagle and a wild goose in 1860
#29 A blacksmith forging a horseshoe, captured in the 1860s
#30 A photograph of the Market in Nassau from the 1890s
#31 A portrait of Sir Pratab Singh and his entourage, 1882
#32 The kitchen of an 8th Hussar unit in Russia, 1855
#33 Men stand amid the rubble of the Great Chicago Fire
#34 An 1867 portrait of Sir John Herschel
#35 East and West shake hands at the Union Pacific Railroad's last rail
#36 An iconic 1861 photograph of Cathedral Rock
