Kitchin, Edward A. _Birds of the Olympic Peninsula._ 262 pp. Olympic
Stationers. Port Angeles, Wash., 1949. A description of 261 species
of birds by a naturalist who spent 50 years observing the birds of
Washington.
Peterson, Roger T. _A Field Guide to Western Birds._ 366 pp. Houghton
Mifflin Co. Boston, 1961. An essential manual for birds of the
entire West. Illustrated.
Wilhelm, Eugene J., Jr. _Common Birds of Olympic National Park._ 54
pp. The Olympic Natural History Assoc. Port Angeles, Wash., 1961. A
guide to 116 species by areas in the park. Written by a former
ranger-naturalist.