The Prints and Photographs division maintains the entire Theodor Horydczak collection which consists of more than 32,000 items, including approximately 17,450 black-and-white photographs, 14,000 negatives, and 1,500 color transparencies. Approximately 14,350 digital images are included in this online collection.
In taking his photographs Horydczak usually employed a large-format camera, the Gold Ansco, which was well suited to photographing views and buildings. He appears to have favored the eight-by-ten-inch negative format. Virtually identical views of certain subjects abound in Horydczak's negatives, a result of his use of the common technique of "bracketing," or making multiple exposures at different camera aperture settings.