Spirit photos by Thomas Glendenning Hamilton.

Thomas Glendenning Hamilton (November 27, 1873 – April 7, 1935) was a Canadian doctor, school board trustee and member of the Manitoba legislature. He is best known however for the thousands of photographs he took during séances held in his home in Winnipeg in the early 1900s. His wife, Lillian May Hamilton, and his daughter, Margaret Hamilton Bach, were co-researchers and continued this enquiry into life after death after he died.