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- John Crawford (de)
- John Cassin (de)
- Edward Arthur Butler (de)
- Types of Bird Genera, Limnothlypis, New Genus (de)
- A new hummingbird from Colombia (de)
- In Memoriam: Witmer Stone (de)
- Thomas B. Wilson, M. D. (de)
- The distribution of bird-life in Colombia: a contribution to a biological survey of South America (de)
- Further Remarks on the Relationships of the Grackles of the Subgenus Quiscalu (de)
- A hand-list of the genera and species of birds: nomenclator avium tum fossilium tum viventium (de)
- The descendants of George Steele of Barthomley, Cheshire, England and Chester Country, Pennsylvania (de)
- A Revision of the North American Horned Owls with Description of a New Subspecies (de)
- A Collection of Mammals from Sumatra, with a Review of the Genera Nycticebus and Tragulus (de)
- Mathews on the Birds of Norfolk and Lord Howe Islands and New Zealand (de)
- Bird studies at old Cape May; an ornithology of coastal New Jersey (de)
- Bird studies at old Cape May; an ornithology of coastal New Jersey wih introduction by Roger Tory Peterson (de)
- The birds of eastern Pennsylvania and New Jersey, with introductory chapters on geographical distribution and migration, prepared under the direction of the Delaware Valley Ornithological Club (de)
- Descriptions of a New Rabbit from the Liu Kiu Islands and a New Flying Squirrel from Borneo (de)
- A protest against changing the International Code of Zoological Nomenclature (de)
- A Migration of Hawks at Germantown, Pa. (de)
- A New Burrowing Owl from Colombia (de)
- A new Evotomys from Southern New Jersey (de)
- A new Melanoplus from New Jersey (de)
- A new Synaptomys from New Jersey (de)
- A new species of Coccyzus from St. Andrews (de)
- A protest against Quadrinomialism (de)
- A review of the genus Piaya Lesson (de)
- Abama americana (Ker) Morong (de)
- Amos Peaslee Brown (de)
- Arsiaema pusillum in the Pennsilvania Alleghanies (de)
- Bannerman on the Ornithology of the Canary Islands (de)
- Racial variatian in plants and animals, with special reference to the violets of Philadelphia and vicinity (de)
- Brachiaria digitariodes from New Jersey (de)
- Charles Sumner Williamson (de)
- Descriptions of Three New Birds from Northern Siam (de)
- Eaton’s ‘Birds of New York’ (de)
- Felis Oregonensis Raf. again! (de)
- George Spencer Morris (de)
- Graphic Representation of Bird Migration (de)
- On a collection of birds from British East Africa obtained by George L. Harrison (de)
- A Revision of the Species of Molothrus Allied To M. Bonariensis (Gm.) (de)
- Ida Augusta Keller (1866-1932) (de)
- In memoriam: Charles Wallace Richmond 1868–1932 (de)
- John W. Eckfeldt (1851-1933) (de)
- A new Texas subspecies of the lizard genus Holbrookia (de)
- Mathews's "The Birds of Australia" (de)
- Mathews’ Birds of Australia (de)
- The Plants of Southern New Jersey with especial Reference to the Flora of the Pine Barrens and the Geographic Distribution of the Species (de)
- New plants of New Jersey (de)
- Notes on New Jersey violets (de)
- Notes on a Collection of Californian Mammals (de)
- On a collection of mammals from Ecuador (de)
- Problems in Modernizing an Old Museum (de)
- Recent Publications on Economic Ornithology (de)
- Rynchospora rariflora in southern New Jersey (de)
- Some Light on Night Migration (de)
- Some new plants for southern New Jersey (de)
- Spencer Trotter, 1860–1931 (de)
- Stewardson Brown (de)
- Supplementary Note on J. P. Giraud (de)
- Swarth’s List of Arizona Birds (de)
- The Botanical Work of Witmer Stone (de)
- The Delaware Valley Ornithological Club (de)
- The Genus Sturnella (de)
- The Hawaiian rat (de)
- The Mammals of New Jersey (de)
- The New Nature Library (de)
- The Pumas of the Western United States (de)
- The Turkey Buzzard breeding in Pennsylvania (de)
- The Type Locality of Balaena Cisarctica Cope (de)
- The Work of William, Son of John Bartram (de)
- The use and abuse of the genus (de)
- Three New Birds from Honduras (de)
- Two New Birds from Nicaragua (de)
- Some Philadelphia ornithological collections and collectors, 1784-1850 (de)
- Viola renifolia in the Pennsilvania Alleghanies (de)
- William Aldworth Poyser (de)
- Witmer Stone (1866 to 1939) (de)
- A Bibliography and Nomenclatur of the Ornithological Works of John James Audubon (de)
- The Fifty-Seventh Stated Meeting of the American Ornithologists’ Union (de)
- Bird studies at old Cape May; an ornithology of coastal New Jersey with introduction by Roger Tory Peterson (de)
- On a Collection of Birds and Mammals from the Colorado Delta, Lower California (de)
- A study of the type specimens of birds in the collection of the Academy of Natural Sciences of Philadelphia, with a brief history of the collection (de)
- American animals: a popular guide to the mammals of North America north of Mexico, with intimate biographies of the more familiar species (de)
- Description of a New Cyprinoid Fish (Notropis stonei) with Notes on Other Fishes Obtained in the United States (de)
- Report on the Birds and Mammals collected by the McIlhenny Expedition to Pt. Barrow, Alaska (de)
- Winter plumages: illustrated by the Rose-breasted Grosbeak (Zamelodia ludoviciana) (de)
- The Coastal Strip of New Jersey and the Rediscovery of Lilaeopsis (de)
- The Birds of Honduras with Special Reference to a Collection Made in 1930 by John T. Emlen, Jr., and C. Brooke Worth (de)
- The birds of New Jersey their nests and eggs and notes on New Jersey Fishes, Amphibians and Reptiles (de)
- On the terrestrial vertebrates of portions of southern New Mexico and western Texas (de)
- The South African Forms of Saxicola torquata: Ninth Pre-Liminary Paper on the Birds Collected during the Gray African Expedition (de)
- The relative merits of the 'Elimination' and 'First Species' method in fixing the types of Genera - With special reference to ornithology (de)
- Proper name for the Western Horned Owl of North America (de)
- The Molting of Birds with Special Reference to the Plumages of the Smaller Land Birds of Eastern North America (de)
- Descriptions of a new species of Neotoma from Pennsylvania (de)
- Aiken and Warren on the Birds of El Paso County, Colorado (de)
- On a collection of birds from the vicinity of Bogota, with a review of the South American species of Speotypoand Troglodytes (de)
- John Crawford (de)
- John Cassin (de)
- Edward Arthur Butler (de)
- Types of Bird Genera, Limnothlypis, New Genus (de)
- A new hummingbird from Colombia (de)
- In Memoriam: Witmer Stone (de)
- Thomas B. Wilson, M. D. (de)
- The distribution of bird-life in Colombia: a contribution to a biological survey of South America (de)
- Further Remarks on the Relationships of the Grackles of the Subgenus Quiscalu (de)
- A hand-list of the genera and species of birds: nomenclator avium tum fossilium tum viventium (de)
- The descendants of George Steele of Barthomley, Cheshire, England and Chester Country, Pennsylvania (de)
- A Revision of the North American Horned Owls with Description of a New Subspecies (de)
- A Collection of Mammals from Sumatra, with a Review of the Genera Nycticebus and Tragulus (de)
- Mathews on the Birds of Norfolk and Lord Howe Islands and New Zealand (de)
- Bird studies at old Cape May; an ornithology of coastal New Jersey (de)
- Bird studies at old Cape May; an ornithology of coastal New Jersey wih introduction by Roger Tory Peterson (de)
- The birds of eastern Pennsylvania and New Jersey, with introductory chapters on geographical distribution and migration, prepared under the direction of the Delaware Valley Ornithological Club (de)
- Descriptions of a New Rabbit from the Liu Kiu Islands and a New Flying Squirrel from Borneo (de)
- A protest against changing the International Code of Zoological Nomenclature (de)
- A Migration of Hawks at Germantown, Pa. (de)
- A New Burrowing Owl from Colombia (de)
- A new Evotomys from Southern New Jersey (de)
- A new Melanoplus from New Jersey (de)
- A new Synaptomys from New Jersey (de)
- A new species of Coccyzus from St. Andrews (de)
- A protest against Quadrinomialism (de)
- A review of the genus Piaya Lesson (de)
- Abama americana (Ker) Morong (de)
- Amos Peaslee Brown (de)
- Arsiaema pusillum in the Pennsilvania Alleghanies (de)
- Bannerman on the Ornithology of the Canary Islands (de)
- Racial variatian in plants and animals, with special reference to the violets of Philadelphia and vicinity (de)
- Brachiaria digitariodes from New Jersey (de)
- Charles Sumner Williamson (de)
- Descriptions of Three New Birds from Northern Siam (de)
- Eaton’s ‘Birds of New York’ (de)
- Felis Oregonensis Raf. again! (de)
- George Spencer Morris (de)
- Graphic Representation of Bird Migration (de)
- On a collection of birds from British East Africa obtained by George L. Harrison (de)
- A Revision of the Species of Molothrus Allied To M. Bonariensis (Gm.) (de)
- Ida Augusta Keller (1866-1932) (de)
- In memoriam: Charles Wallace Richmond 1868–1932 (de)
- John W. Eckfeldt (1851-1933) (de)
- A new Texas subspecies of the lizard genus Holbrookia (de)
- Mathews's "The Birds of Australia" (de)
- Mathews’ Birds of Australia (de)
- The Plants of Southern New Jersey with especial Reference to the Flora of the Pine Barrens and the Geographic Distribution of the Species (de)
- New plants of New Jersey (de)
- Notes on New Jersey violets (de)
- Notes on a Collection of Californian Mammals (de)
- On a collection of mammals from Ecuador (de)
- Problems in Modernizing an Old Museum (de)
- Recent Publications on Economic Ornithology (de)
- Rynchospora rariflora in southern New Jersey (de)
- Some Light on Night Migration (de)
- Some new plants for southern New Jersey (de)
- Spencer Trotter, 1860–1931 (de)
- Stewardson Brown (de)
- Supplementary Note on J. P. Giraud (de)
- Swarth’s List of Arizona Birds (de)
- The Botanical Work of Witmer Stone (de)
- The Delaware Valley Ornithological Club (de)
- The Genus Sturnella (de)
- The Hawaiian rat (de)
- The Mammals of New Jersey (de)
- The New Nature Library (de)
- The Pumas of the Western United States (de)
- The Turkey Buzzard breeding in Pennsylvania (de)
- The Type Locality of Balaena Cisarctica Cope (de)
- The Work of William, Son of John Bartram (de)
- The use and abuse of the genus (de)
- Three New Birds from Honduras (de)
- Two New Birds from Nicaragua (de)
- Some Philadelphia ornithological collections and collectors, 1784-1850 (de)
- Viola renifolia in the Pennsilvania Alleghanies (de)
- William Aldworth Poyser (de)
- Witmer Stone (1866 to 1939) (de)
- A Bibliography and Nomenclatur of the Ornithological Works of John James Audubon (de)
- The Fifty-Seventh Stated Meeting of the American Ornithologists’ Union (de)
- Bird studies at old Cape May; an ornithology of coastal New Jersey with introduction by Roger Tory Peterson (de)
- On a Collection of Birds and Mammals from the Colorado Delta, Lower California (de)
- A study of the type specimens of birds in the collection of the Academy of Natural Sciences of Philadelphia, with a brief history of the collection (de)
- American animals: a popular guide to the mammals of North America north of Mexico, with intimate biographies of the more familiar species (de)
- Description of a New Cyprinoid Fish (Notropis stonei) with Notes on Other Fishes Obtained in the United States (de)
- Report on the Birds and Mammals collected by the McIlhenny Expedition to Pt. Barrow, Alaska (de)
- Winter plumages: illustrated by the Rose-breasted Grosbeak (Zamelodia ludoviciana) (de)
- The Coastal Strip of New Jersey and the Rediscovery of Lilaeopsis (de)
- The Birds of Honduras with Special Reference to a Collection Made in 1930 by John T. Emlen, Jr., and C. Brooke Worth (de)
- The birds of New Jersey their nests and eggs and notes on New Jersey Fishes, Amphibians and Reptiles (de)
- On the terrestrial vertebrates of portions of southern New Mexico and western Texas (de)
- The South African Forms of Saxicola torquata: Ninth Pre-Liminary Paper on the Birds Collected during the Gray African Expedition (de)
- The relative merits of the 'Elimination' and 'First Species' method in fixing the types of Genera - With special reference to ornithology (de)
- Proper name for the Western Horned Owl of North America (de)
- The Molting of Birds with Special Reference to the Plumages of the Smaller Land Birds of Eastern North America (de)
- Descriptions of a new species of Neotoma from Pennsylvania (de)
- Aiken and Warren on the Birds of El Paso County, Colorado (de)
- On a collection of birds from the vicinity of Bogota, with a review of the South American species of Speotypoand Troglodytes (de)
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