Photograph of William Morris Davis riding a horse below the graded slopes of the Vermillion Cliffs in northern Arizona. From Herbert E. Gregory Book 1, page 4
Photograph from Herbert E. Gregory Book 3: Navajo-Hopi, Arizona-New Mexico, 1909, showing a wild hor...
Photograph showing three horses and an unidentified man on horseback, Upper Silver Falls Canyon. Chi...
Photograph of Canyon de Chelly in 1913, with Shinarump capping Permian rock. Horses of the Herbert G...
Photograph of the Vermillion Cliffs in northern Arizona, with landslides. From Herbert E. Gregory Bo...
Photograph of the Vermillion Cliffs in northern Arizona, with landslides. From Herbert E. Gregory Bo...
Photograph of William Morris Davis riding a horse in the desert northeast of Mount Trumbull, with vo...
Photograph of H. R. Barrett and Herbert Gregory riding horses on the desert near Fredonia, Arizona, ...
Photograph of members of the Herbert Gregory party camping below the Vermillion Cliffs in northern A...
Photograph of horses at the Dolores cliffs about 8 miles north of Tolchaco, Coconino Co., Arizona, i...
Photograph of Edna H. Gregory on horseback after a ride over mesas near Ganado, Arizona, in 1911. P...
Photograph of a balanced rock of Shinarump sandstone at the base of the Vermilion Cliffs in northern...
Photograph of a distant view of the West Kaibab Fault in northern Arizona. Horses of the Herbert Gre...
Photograph from Herbert E. Gregory Book 3: Navajo-Hopi, Arizona-New Mexico, 1909, showing wild horse...
Photograph of a view of cliffs along the Little Colorado River in northeastern Arizona in 1900. From...
Photograph of horses with Herbert Gregory party grazing at Marsh Pass, Arizona, 1913. Photo 675 fro...
Photograph from Herbert E. Gregory Book 3: Navajo-Hopi, Arizona-New Mexico, 1909, showing a wild hor...
Photograph showing three horses and an unidentified man on horseback, Upper Silver Falls Canyon. Chi...
Photograph of Canyon de Chelly in 1913, with Shinarump capping Permian rock. Horses of the Herbert G...
Photograph of the Vermillion Cliffs in northern Arizona, with landslides. From Herbert E. Gregory Bo...
Photograph of the Vermillion Cliffs in northern Arizona, with landslides. From Herbert E. Gregory Bo...
Photograph of William Morris Davis riding a horse in the desert northeast of Mount Trumbull, with vo...
Photograph of H. R. Barrett and Herbert Gregory riding horses on the desert near Fredonia, Arizona, ...
Photograph of members of the Herbert Gregory party camping below the Vermillion Cliffs in northern A...
Photograph of horses at the Dolores cliffs about 8 miles north of Tolchaco, Coconino Co., Arizona, i...
Photograph of Edna H. Gregory on horseback after a ride over mesas near Ganado, Arizona, in 1911. P...
Photograph of a balanced rock of Shinarump sandstone at the base of the Vermilion Cliffs in northern...
Photograph of a distant view of the West Kaibab Fault in northern Arizona. Horses of the Herbert Gre...
Photograph from Herbert E. Gregory Book 3: Navajo-Hopi, Arizona-New Mexico, 1909, showing wild horse...
Photograph of a view of cliffs along the Little Colorado River in northeastern Arizona in 1900. From...
Photograph of horses with Herbert Gregory party grazing at Marsh Pass, Arizona, 1913. Photo 675 fro...
Photograph from Herbert E. Gregory Book 3: Navajo-Hopi, Arizona-New Mexico, 1909, showing a wild hor...
Photograph showing three horses and an unidentified man on horseback, Upper Silver Falls Canyon. Chi...
Photograph of Canyon de Chelly in 1913, with Shinarump capping Permian rock. Horses of the Herbert G...