Robert Ridgway

The Birds of North and Middle America Volume 2; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of Th

The Birds of North and Middle America Volume 6, No. 1914; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Isl

The Birds of North and Middle America Volume 8; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of Th

The Birds of North and Middle America Volume . 3; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of the C

The Birds of North and Middle America; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of the Caribbe

The Birds of North and Middle America Volume 7; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of T

The Birds of North and Middle America Volume N . 50, a - 7; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Is

The Birds of North and Middle America Volume 10, No. 1946; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other I

The Birds of North and Middle America Volume 3; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of Th

The Birds of North and Middle America Volume 6; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of T

The Birds of North and Middle America Volume 8, No. 1919; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Isl

The Birds of North and Middle America Volume 1; A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of Th

Directions for Collecting Birds Volume 39, PT. 1

The Ornithology of Illinois

On a Collection of Birds Made by Messrs. J. E. Benedict and W. Nye of the United States Fish Commission Steamer Albatross.

The Water Birds of North America

A Nomenclature of Colors for Naturalists

The Humming Birds

The Ornithology of Illinois

The Humming Bird

A Manual of North American Birds

The Birds of North and Middle America: A Descriptive Catalogue of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, From the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of the Caribbe

Die Nordamerikanische Vogelwelt

Die Nord-Amerikanische Vogelwelt Volume Heft 1-10