Strong, William Duncan "North American Traditions Suggesting a Knowledge of the Mammoth," American Anthropologist, No. 36 (1934)

When asked to describe Kátcheetohúskw, the [Naskapi] informants said he was very large, had a big head, large ears and teeth, and a long nose with which he hit people. His tracks in the snow were described in their stories as large and round. One Indian who had seen pictures of the modern elephant said he thought that Kátcheetohúskw was the elephant ... the older Indians question were unanimous in declaring that such had always been the description of the Kátcheetohúskw so far as they had any knowledge.

...

Dr. Frank G. Speck has kindly sent me an interesting tale which he recently secured from the Penobscot Indians of Maine. The myth concerns the adventures of Snowy Owl, a Penobscot culture hero ... He saw what seemed to be hills without vegetation moving slowly about. Upon closer scrutiny he saw that these masses were really the backs of great animals with long teeth, animals so huge that when they lay down they could not get up. They drank for half a day at a time. Snowy Owl went on and after many adventures secured his wife. Then he returned to the place where the animals had their "yards." He cut certain trees upon which the monsters were accustomed to lean at night so that when they did so the trees would break. Thus the animals fell upon the sharp stumps and Snowy Owl shot them all.