Artworks · Timothy H. O'Sullivan

Navajo Brave and his Mother. The Navajo were formerly a warlike tribe until subdued by U.S. Troops, in 1859-60. Many of them now have fine flocks, and herds of horses, sheeps and goats, No. 29 from the series "Geographical Explorations and Surveys West of the 100th Meridian"

1873 · Albumen print, stereo

Each image: 9.3 × 7.4 cm (3 11/16 × 2 15/16 in.); Card: 10 × 17.7 cm (3 15/16 × 7 in.)

Art Institute of Chicago

Geographical & Geological Explorations & Surveys West of the 100th Meridian

1873 · Albumen prints in two bound albums

40 × 53 × 4 cm (overall, Vol. 1); 51 × 41.5 × 5.7 cm (overall, Vol. 2)

Art Institute of Chicago

Ancient Ruins in the Cañon de Chelle, N.M. In a niche 50 feet above present Cañon bed.

1873 · Albumen print

Image/paper: 27.4 × 20.1 cm (10 13/16 × 7 15/16 in.); Mount: 49.7 × 39.3 cm (19 5/8 × 15 1/2 in.)

Art Institute of Chicago

Historic Spanish Record of the Conquest, South Side of Inscription Rock, N.M., No. 3

1873 · albumen print from wet collodion negative

Image: 20.5 x 27.6 cm (8 1/16 x 10 7/8 in.); Matted: 45.7 x 55.9 cm (18 x 22 in.)

Cleveland Museum of Art

Geographical Explorations and Surveys West of the 100th Meridian

1871 · Albumen prints, stereo cards (46)

Art Institute of Chicago

Black Cañon, From Camp 8, Looking Above

1871 · Albumen silver print from glass negative

20 x 28.1 cm (7 7/8 x 11 1/16 in. )

The Metropolitan Museum of Art

Types of Mojave Indians. This tribe inhabits the region of the lower Colorado, or western Arizona.Physically, they are the finest specimens in all the West, many of the males attaining to the height of 6 feet, No. 5 from the series "Geographical Explorations and Surveys West of the 100th Meridian"

1871 · Albumen print, stereo

Each image: 9.4 × 7.5 cm (3 3/4 × 3 in.); Card: 10 × 17.7 cm (3 15/16 × 7 in.)

Art Institute of Chicago

East Humboldt Mountains, Utah

1868 · albumen print from wet collodion negative

Image: 19.7 x 27 cm (7 3/4 x 10 5/8 in.); Matted: 40.6 x 50.8 cm (16 x 20 in.)

Cleveland Museum of Art

Sand Dunes, Carson Desert, Nevada

1867 · albumen print from wet collodion negative

Image: 19.7 x 27 cm (7 3/4 x 10 5/8 in.); Mounted: 45.7 x 59.4 cm (18 x 23 3/8 in.); Matted: 50.8 x 61 cm (20 x 24 in.)

Cleveland Museum of Art

Iceberg Canyon, Colorado River Looking Above

1866 · albumen print from wet collodion negative

Image: 20.2 x 27.3 cm (7 15/16 x 10 3/4 in.); Mounted: 35.5 x 45.7 cm (14 x 18 in.); Matted: 50.8 x 61 cm (20 x 24 in.)

Cleveland Museum of Art

Chief Officer and Clerks of the Ambulance Department, 9th Army Corps, in Front of Petersburg, Virginia

1864 · Albumen silver print from glass negative

Image: 6 7/8 × 8 7/8 in. (17.5 × 22.5 cm) Mount: 10 5/16 × 15 1/16 in. (26.2 × 38.2 cm)

The Metropolitan Museum of Art

General Hospital, Point of Rocks, Appomattox River below Petersburg

1864 · Albumen silver print from glass negative

The Metropolitan Museum of Art

A Harvest of Death, Gettysburg, Pennsylvania

1863 · Albumen print, pl. 36 from the album "Gardner's Photographic Sketch Book of the War, vol. 1" (1866)

Image/paper: 17.3 × 22.4 cm (6 13/16 × 8 7/8 in.); Album page: 31 × 44.3 cm (12 1/4 × 17 1/2 in.)

Art Institute of Chicago

Major General Pleasanton and General Custer

1863 · Albumen silver print from glass negative

Mount: 11 9/16 × 15 13/16 in. (29.4 × 40.1 cm) Image: 6 13/16 × 8 7/8 in. (17.3 × 22.5 cm)

The Metropolitan Museum of Art

Field Where General Reynolds Fell, Gettysburg

1863 · Albumen print, pl. 37 from the album "Gardner's Photographic Sketch Book of the War, vol. 1" (1866)

Image/paper: 17.7 × 22.9 cm (7 × 9 1/16 in.); Album page: 31.1 × 44.6 cm (12 1/4 × 17 9/16 in.)

Art Institute of Chicago

U.S. Gunboat "Commodore Perry" on Pamunkey River

1861 · Albumen silver print from glass negative

The Metropolitan Museum of Art