National Geographic Society – författare

NG Park Profiles: Blue Ridge Range

Flat Tops South West Rifle Gap

Kebler Pass/Paonia Reservoir

National Geographic Magazine; v. 4 1892

National Geographic Magazine; v. 21 Jan-June 1910

National Geographic Magazine; v. 3 1891

National Geographic Magazine; v. 6 1894-95

National Geographic Magazine; v. 4 1892

National Geographic Magazine; v. 5 1893

Scenes From Every Land; a Collection of 250 Illustrations From the National Geographic Magazine, Picturing the People, Natural Phenomena, and Animal Life in All Parts of the World. With One Map and a Short Bibliography of Gazetteers, Atlases, and Books...

Scenes From Every Land, Second Series; a Collection of 250 Illustracions Picturing the People, Natural Phenomena, and Animal Life in All Parts of the World. With One Map and a Bibliography of Gazetteers, Atlases, and Books Descriptive of Foreign...

National Geographic Magazine; v. 3 1891

National Geographic Magazine; v. 6 1894-95

Book of Birds

Common Birds of Town and Country and American Game Birds

National Geographic Magazine; Volume 12

Valley of Ten Thousand Smokes

Valley of Ten Thousand Smokes

Book of Dogs

An Intimate Study of Mankind's Best Friend

Book of Dogs

An Intimate Study of Mankind's Best Friend

National Geographic Magazine Volume 1901; Volume 12

National Geographic Magazine Volume 1889; Volume 1

National Geographic Magazine Volume 1901; Volume 12

Our Flag Number, With 1197 Flags in Full Colors and 300 Additional Illustrations in Black and White

National Geographic Magazine

National Geographic Magazine Volume 1890; Volume 2

National Geographic Magazine; Volume 26

National Geographic Magazine; Volume 26

National Geographic Magazine Volume Jan-June 1915; Volume 27

National Geographic Magazine; Volume 11