Title: Haynes new guide and motorists' complete road log of Yellowstone National Park Year: 1922 (1920s)
Authors: Jack Ellis Haynes, 1884-1962
Source book page: https://archive.org/stream/haynesnewguidemo1922hayn/haynesnewguidemo1922hayn#page/n115/mode/1up
Source: https://commons.wikimedia.org/wiki/File:Haynes_new_guide_and_motorists%27_complete_road_log_of_Yellowstone_National_Park_(1922)_(14594709900).jpg
The mule deer (Odocoileus hemionus) is a deer indigenous to western North America; it is named for its ears, which are large like those of the mule.