Balto, the sled dog who became a national hero in 1925 as part of the team that transported diphtheria serum to Nome, Alaska, poses for a picture with the vaudeville act The Quackenbush Twins. Balto's remains were donated to the Cleveland Museum of Natural History in 1933 after his death at Cleveland's Brookside Zoo. | Source: Cleveland Museum of Natural HistoryDownload Original File
