1955. 479 pp. Hardcover without dust jacket, in Very Good condition. Previous owner's name stamped (very small) on the front free endpaper. Published under the sponsorship of the American Ornithologists' Union. This book has two objectives; one, to stimulate further research in ornithology, and two, to provide biologists in other fields with a convenient and authoritative source of the contributions of ornithological research to broader biological fields, such as systematics, evolution, anatomy, behavior, etc.