Hazeltine specialized in stereography, creating one of the largest collections of scenic landscape photography of the American West dating to the 1860s and 1870s.

The two brothers left Vermont in 1853, taking a ship from New York, arriving in San Francisco two months later, where they would open a photography studio.

[1] Hazeltine pursued a career in landscape photography, traveling throughout the American West to capture Nevada, Oregon, Idaho, and California, including Yellowstone National Park.

[1] A selection of Hazeltine's stereographs reside in the collection of Claremont College, primarily focused around Yosemite Valley and northern California.

Additionally, Hazeltine's works are found in the collections of the Oregon Historical Society, the Bancroft Library, and Princeton University.