The writers of Mammals of Mount Rainier National Park are indebted to the following individuals for their critical assistance and encouragement in the preparation of the manuscript:

Dr. A. Svihla, Zoology Department, University of Washington,

Mr. Herbert Evison, Chief of Information, National Park Service,

Mr. Victor H. Cahalane, Biologist, National Park Service,

Mr. E. Lowell Sumner, Regional Biologist, Region Four, National Park Service.

Through their constructive suggestions the finished publication has been materially strengthened.

Photographs were obtained through the courtesy of Mount Rainier, Yellowstone, Rocky Mountain, and Glacier National Parks; and Mr. Joseph M. Dixon, Mr. E. Lowell Sumner, and Mr. F. J. McGrail.

Merlin K. Potts Russell K. Grater