Keywords: lincoln park zoo chicago illinois polar bear historic lincoln park zoo lincolnparkzoo animalia chordata mammalia carnivora caniformia ursidae mammal animal polar bear polarbear cage enclosure ursus ursus maritimus ursusmaritimus blackandwhite monochrome black and white Polar Bear (Ursus maritimus) in cage. Lincoln Park Zoo. 1900. Original size and material: 4x5 inch glass negative Digital Identifier: Z80018 Part of the Illinois Urban Landscapes Project: www.fieldmuseum.org/urbanlandscapes/ Polar Bear (Ursus maritimus) in cage. Lincoln Park Zoo. 1900. Original size and material: 4x5 inch glass negative Digital Identifier: Z80018 Part of the Illinois Urban Landscapes Project: www.fieldmuseum.org/urbanlandscapes/ |