Coues, E: Key to North American Birds, Vol. 2 of 2

Union, A: Check-List of North American Birds (Classic Reprin

Bent, A: Life Histories of North American Birds of Prey, Vol

Coues, E: Key to North American Birds

Union, A: North American Birds (Classic Reprint)

Coues, E: Key to North American Birds

Bent, A: Life Histories of North American Birds of Prey, Vol

Chapman, F: Color Key to North American Birds

Baird, S: Review of American Birds, Vol. 1

Finley, W: American Birds

Baird, S: History of North American Birds, Vol. 2

Union, A: Check-List of North American Birds (Classic Reprin

Baird, S: History of North American Birds, Vol. 3 (Classic R

Ridgway, R: Manual of North American Birds (Classic Reprint)

Bendire, C: Life Histories of North American Birds

Coues, E: Key to North American Birds, Vol. 1 of 2 (Classic

Sclater, P: Catalogue of a Collection of American Birds (Cla

Reed, C: North American Birds Eggs

Chapman, F: Color Key to North American Birds

Bendire, C: Life Histories of North American Birds

Baird, S: History of North American Birds, Vol. 1

Chapman, F: Color Key to North American Birds

Union, A: Check-List of North American Birds (Classic Reprin

Coues, E: Key to North American Birds

Finley, W: American Birds

Bent, A: Life Histories of North American Birds of Prey, Vol

Union, A: North American Birds (Classic Reprint)

Baird, S: History of North American Birds, Vol. 3 (Classic R

History of North American Birds

History of North American Birds

Baird, S: History of North American Birds, Vol. 2

Coues, E: Key to North American Birds, Vol. 1 of 2 (Classic

Coues, E: Key to North American Birds, Vol. 2 of 2

Bendire, C: Life Histories of North American Birds

Baird, S: Catalogue of North American Birds, Chiefly in the

Ridgway, R: Manual of North American Birds

Check-List of North American Birds

Check-List of North American Birds

Chapman, F: Habitat Groups of North American Birds in the Am

Oliver, D: Nests and Eggs of North American Birds

Color Key to North American Birds

Bendire, C: Life Histories of North American Birds, from the

Bendire, C: Life Histories of North American Birds, with Spe

Nests and Eggs of North American Birds

Ridgway, R: Manual of North American Birds

Color Key to North American Birds, With Bibliographical Appe

Ridgway, R: Manual of North American Birds

Life Histories of North American Birds with Special Referenc

Coues, E: Coues Check List of North American Birds

Baird, S: Review of American Birds in the Museum of the Smit

Ridgway, R: Nomenclature of North American Birds Chiefly Con

American Birds, Studied and Photographed from Life...

Eggs of North American Birds...

Catalogue of a Collection of American Birds...

Review of American Birds in the Museum of the Smithsonian In

Coues Check List of North American Birds...

The Bird Book, Illustrating in Natural Colors More Than Seven Hundred North American Birds, Also Several Hundred Photographs of Their Nests and Eggs

Life Histories of North American Birds, From the Parrots to the Grackles [microform]: With Special Reference to Their Breeding Habits and Eggs

Review of American Birds, in the Museum of the Smithsonian Institution. Part I

Life Histories of North American Birds, From the Parrots to the Grackles [microform]: With Special Reference to Their Breeding Habits and Eggs