Wapiti
2 of the 7 encyclopedias on this shelf carry an entry for Wapiti. Both are reproduced below, so you can see where they agree and where they differ.
Aiton's Encyclopedia (1910)
the North American stag or elk. The name is Indian. The wapiti is related to the European red deer. It is not considered a true elk. The adult stands about sixty-four inches high at the shoulder. The general color is yellowish, the sides are gray. Long, coarse hair drapes the neck like a dewlap, and the antlers attain a length of four or five feet. When this country was colonized the wapiti ranged from the Carolinas to the Rocky Mountains , but it is now confined to sections of Labrador and the northern half of the Rocky Mountains. During the breeding season the does scatter, but in winter the wapiti gather together in large herds and feed in the parks and on the open hills. The custom of migrating southward for winter feed has exposed the bands to destruction. It is thought that the wapiti may soon become extinct. See Elk
Collier's New Encyclopedia (1921)
the name given by the North American Indians to Cervus canadensis, a native of North America, ranging from the Carolinas to lat. 56-57° N. It is closely allied to but considerably WAPITI larger than the stag, standing about 54 inches at the shoulder; yellowish brown on the upper parts; sides gray, long coarse hair in front of neck, like a dewlap; antlers large, brow-tine duplicated. It frequents low grounds, or woody tracts near savannahs or marshes. The venison is of little value, as it is coarse and dry; but the hide makes excellent leather. It is called also, but erroneously, the elk and gray moose.