Timothy O'Sullivan, William H. Bell

The photographic collaboration between Timothy O'Sullivan and William H. Bell is documented primarily within the years 1871 and 1872. This brief, focused period yielded a significant series of survey photographs detailing vast geological formations.

Fifteen of their collaborative photographic works are represented in major museum collections, establishing the historical importance of the Timothy O'Sullivan, William H. Bell prints. These works are notably held by the Museum of Modern Art (MoMA). Their subject matter concentrates on geological formations and river surveys, including multiple views of the Canyon of Kanab Wash, Colorado River, Looking North and variations looking South. Other represented works held in collections include the Colorado River, Mouth of Kanab Wash, Looking West.

While the full extent of their joint output remains undocumented, the existing portfolio provides vital visual records from the early 1870s. These historically significant photographs, often available in the public domain, continue to be studied for both their technical photographic achievements and their documentary value. The lasting importance of this work ensures that high-quality prints and downloadable artwork remain crucial resources for researchers and historians today.