Catlin and Party Stalking Buffalo, Upper Missouri

“Their colour is a dark brown, but changing very much as the season varies from warm to cold; their hair or fur, from its great length in the winter and spring, and exposure to the weather, turning quite light, and almost to a jet black, when the winter coat is shed off, and a new growth is shooting out.” (Catlin, Letters and Notes, vol. 1, no. 31, 1841; reprint 1973)