Ridgway, Robert, 1850-1929. A manual of North American birds. By Robert Ridgway. Illustrated by 464 outline drawings of the generic characters. - 4th ed. - Philadelphia, J.B. Lippincott Company, 1900. - xiii, 653 p. front. (port.) CXXIV pl. 24 cm. LCCN: w 06000038 Subjects--Topical Terms: Birds.Birds--North America LC Class. No.: QL681 / .R54 1900