Colorado River (Colo.-Mexico) -- Pictorial works

Overview: The collection consists of photograph albums, lantern slides, and photographic negatives documenting Oastler's interest in wildlife and conservation, from 1909-1938. The 68 photograph albums document the Oastlers' trips to the West and elsewhere. Approximately 6400 lantern slides, most of them hand-colored, were used for Dr. Oastler's lectures on the West, and include nine panoramic lantern slides.