Report on the Birds of Pennsylvania. With Special Reference to the Food-Habits, based on over Four Thousand Stomach Examinations. Sec.ed., rev. and augmented.
Harrisburg, 1890. 8vo. Solid full cloth. XIV,434 pp. and 100 plates, of which 99 are chromolith. plts. after Audubon.
The second and much enlarged edition. Zimmer p.663.