John James Reilly (1838-1893) was a photographer and publisher of stereoviews who befriended naturalist John Muir and was Yosemite's first resident photographer. He owned a gallery there from 1870-1875.

Reilly was born in Scotland and moved to Niagara Falls, New York in 1866, where he produced and sold stereoviews to tourists from 1866-1870. He relocated to Stockton, California in 1870 and formed a professional relationship with photographer John Pitcher Spooner. In 1875, he opened a gallery at 729 California Street in San Francisco and produced stereoviews in association with M.M. Hazeltine, E.D. Orsmby, and J. Pitcher Spooner.

He became proprietor of the Wood's Gallery in Marysville, California - a small gold rush town. He eventually abandoned his business and family to move back to San Francisco in 1886. He commmitted suicide in 1893 in San Francisco.

Information taken from:

Mautz, Carl. Biographies of western photographers : a reference guide to photographers working in the 19th century American West. Carl Mautz Publishing, 1997.