Timothy O'Sullivan

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

Geographical Explorations and Surveys West of the 100th Meridian

50th Pennsylvania Infantry in Parade Formation

Sensitive Plant

Grotto Spring, Grand Cañon, Colorado River, No. 4 from the series "Explorations and Surveys West of the 100th Meridian"

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

Snow Peaks, Bull Run Mining District, Nevada

Group of Pah-Ute Indians, Nevada

Bluff Opposite Big Horn Camp, Black Cañon, Colorado River

Black Cañon, Colorado River, looking below from Big Horn Camp

Black Cañon, Colorado River, Looking Above from Camp 7

Black Cañon, Colorado River, Looking Below, Near Camp 7

Black Cañon, Colorado River, looking below near Camp 7. Explorations in Nevada and Arizona, Expedition of 1871. Lieut. Geo. M. Wheeler, Com'd'g.

Black Cañon, Colorado River, from Camp 8, Looking Above

Apache Lake, Sierra Blanca Range, Arizona

View on Apache Lake, Sierra Blanca Range, Arizona

View on Apache Lake, Sierra Blanca Range, Arizona, Two Apache Scouts in the Foreground

North Fork Cañon, Sierra Blanca Creek, Arizona

Cooley's Park, Sierra Blanca Range, Arizona

Distant View of Camp Apache, Arizona

Aboriginal Life Among the Navajoe Indians, Near Old Fort Defiance, N.M.

Historic Spanish Record of the Conquest, South Side of Inscription Rock, N.M. Geographical & Geological Explorations & Surveys West of the 100th Meridian. Expedition of 1873. -Lieut. Geo. M. Wheeler, Corps. of Engineers, Commanding.

Historic Spanish Record of the Conquest, South Side of Inscription Rock, N.M.- No. 3., from the album "Geographical & Geological Explorations & Surveys West of the 100th Meridian," vol. 1

Historic Spanish Record of the Conquest, South Side of Inscription Rock, N.M.