Cleaning the Elephants collection-night Firestone and John Burroughs dubbed

Firestone and John Burroughs dubbed themselves the "Vagabonds" and took camping trips in the eastern states from 1914 and 1924

Subway ridership was declining steadily

"A Day With John F

"Its transformation has been nothing less than astonishing over the past decade

The horses still in service were kept on until they were ready to retire

Cleaning the Elephants collection-night Firestone and John Burroughs dubbedThe elephant exhibit gets cleaned by vacuums and feather dusters at the American Museum of Natural History on Feb. 28, 1951. It's part of spring cleaning at the 25 acre museum, a process requiring 135 workers and a month of scrubbing elephants, dinosaurs, totem poles, teepees and 94,000 square feet of glass. The Times wrote on March 1, 1951, "The 135 man corps of the custodian's department of the American Museum of Natural History has come to a time