Randolph B. Marcy,
The Prairie Traveller, a Hand-book for Overland Expeditions…
(1859)
“ It is the most wary, timid, and fleet animal that inhabits the Plains. It is about the size of a small deer, with a heavy coating of coarse, wiry hair, and its flesh is more tender and juicy than that of the deer. It seldom enters a timbered country, but seems to delight in cropping the grass from the elevated swells of the prairies. When disturbed by the traveler, it will circle around him with the speed of the wind, but does not stop until it reaches some prominent position whence it can survey the country on all sides, and nothing seems to escape its keen vision. ”

