The Hamilton family left a rich legacy. Lillian compiled several scrapbooks of photos and other materials for her children. Margaret, however, was the one who collected all the papers from the family dealing with their paranormal research and deposited these with the University of Manitoba Archives & Special Collections. The family's fonds, or papers, consist of 2.5 linear metres of textual and other materials, and include scrapbooks, séance attendance records and registers, affidavits, automatic writings, correspondence, speeches and lectures, news clippings, journal articles, photographs, glass plate negatives and positives, prints, slides, audio tapes, manuscripts and promotional materials related to major publications. The materials date from 1919-1986 and since their deposit have been supplemented by other related collections. A companion research grant established by the Hamilton family provides funds for researchers to travel to Winnipeg to study these and other archival collections.