Danly, S., & Leibold, C. (1994). Eakins and the photograph: Works by Thomas Eakins and his circle in the collection of the Pennsylvania Academy of the Fine Arts. Washington: Published for the Pennsylvania Academy of the Fine Arts by the Smithsonian Institution Press.

Danly, Susan., and Cheryl Leibold. Eakins and the Photograph: Works By Thomas Eakins and His Circle in the Collection of the Pennsylvania Academy of the Fine Arts. Washington: Published for the Pennsylvania Academy of the Fine Arts by the Smithsonian Institution Press, 1994.

Danly, Susan., and Cheryl Leibold. Eakins and the Photograph: Works By Thomas Eakins and His Circle in the Collection of the Pennsylvania Academy of the Fine Arts. Washington: Published for the Pennsylvania Academy of the Fine Arts by the Smithsonian Institution Press, 1994.