56 photographs taken at the opening of Universal Studios, 1915.
2 photographs of William Horsley.
A biography of David Horsley by William Horsley. In International Photographer, March-April 1934.
Bound volume of Motive Power, vol.1-2, , a monthly journal devoted to scientific boiler making. 1902-1903
Correspondence.
Ephemera.
Panoramic photographic of Nestor Motion Picture Company staff, Photo by Ramsey. December 23, 1911.
David Horsley biography by Marc Wanamaker, Bison Archives 1912