.
American Black Bear, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Unidentified monkey in cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Unidentified monkeys, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Male and female unidentified monkeys sitting in wood enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Polar Bear (Ursus maritimus) in cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Polar Bear (Ursus maritimus) in cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Visitors looking at Polar Bear (Ursus maritimus) walking along the floor of his cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Zookeeper smoking his pipe while feeding two bears who are standing upright, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Zookeeper smokes his pipe while feeding bears, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Cougar sitting on a ledge in a cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Cougar in a cage, two men looking in from outside, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Cougar in a cage with bars, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Cougar in a cage with several men and women looking at it through the bars, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Male lion, in a cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Lions, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Leopard in cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Tiger in cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Tiger in cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Tiger, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Zebra (probably Grant's), in outdoor fenced enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Emu, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Zebra and emu in adjoining cages, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Zebra [Grant's?], Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Zebra [Grant's?]. A gentleman visits a zebra, which is in a caged area, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Zebra. A gentleman visits a zebra, which is ina caged area, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Camel. Hand of unidentified man pointing at camel emerging from a parted curtain, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Nilgai in outdoor fenced enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Kangaroo, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Wolf in cage, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
Wolf in a cage with bars, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
Wolf in stone walled enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
Llama in outdoor fenced enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
Deer in pool of water in their enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
Yak, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
American Bison, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
Elephant in enclosure with roof and chain on its leg. Garden, benches, conservatory building and smoke stack in background, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
Seals or sea lions, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
![]()
Wolf in a cage with bars, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Wolf in stone walled enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Llama in outdoor fenced enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Deer in pool of water in their enclosure, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Yak, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
American Bison, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Elephant in enclosure with roof and chain on its leg. Garden, benches, conservatory building and smoke stack in background, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Seals or sea lions, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Egyptian Goose, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Parrot, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
White Pelican, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Black Swan, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Cranes, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Ostrich, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Pheasant, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Collared Peccaries, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)
Rabbits, Lincoln Park Zoo, Chicago: photographer unknown, 1900 (The Field Museum Library)