The Mary Muir photograph collection contains copy prints, negatives, and slides related to Muir's writing and research into artist LeConte Stewart. Folders 1-3, 7-8, 10 and 12 contain copy negatives, copy prints, and copy scans; while the original material likely dated from between 1900-1950, the reproductions were likely made between the 1990s-2010s. These reproductions were created by photographing original material with either a film or digital camera.