William M Keeler

American spirit photographer, brother of Pierre L. O. A. Keeler, also mentioned in the report of the Seybert Commission. No formal investigation took place because his terms ($300 for three sittings) and his conditions were considered unacceptable. Keeler was later exposed by Walter F. Prince.

Sources:

Prince, Walter F. "Supplementary Report on the Keeler-Lee Photographs." Proceedings of the American Society for Psychical Research 12 (1919).