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.
National Photographic Dealer, August 1943.
Scope and Content Note
Motography, vol.13 no.1, January 2, 1915. pp.17-18.
Scope and Content Note
Bound volume of Motive Power, vol.1-2, 1902-1903, a monthly journal devoted to scientific boiler making.
Scope and Content Note
Correspondence.
Autobiography.
Ephemera.
Panoramic photographic of Nestor Motion Picture Company staff, December 23, 1911. Photo by Ramsey.