Accrual consists of material created and accumulated by members of the Maines Pincock family primarily related to séances and the occult. Includes séance notebooks, sermons, ephemera, photographs, and more.

Fonds consists of material documenting the lives, interests and activities of Jenny Pincock, as well as her sister and brother-in-law Minnie and Fred Maines. The main focus of the fonds is the activities surrounding their interest in spiritualism. Includes correspondence; ms. and ts. seance transcripts and notes; ms. and ts. notes for and drafts of poems and other literary compositions by Jenny Pincock; clippings, ephemera, etc.

Arranged in series as follows:
Series 1: Correspondence;
Series 2: Manuscripts;
Series 3: Notebooks;
Series 4: Sittings : Notes;
Series 5: Topical Files;
Series 6: Clippings;
Series 7: Rev. F.T.J. Maines;
Series 8: Miscellaneous;
Series 9: Pincock, Jenny : Works By;
Series 10: Artifacts

Audio reel recordings of séances held under the supervision of medium Thomas Lacey as well as other events, messages, and music. The séances were held primarily in Kitchener and Waterloo, Ontario although some were held in other areas in Ontario and the Unites States of America. Prior to donation, some of the reels were transferred to audio cassettes. The audio cassettes are also included in the collection. Also includes a cue card index to the séances and a notebook listing séances held at 362 Frederick St. in Kitchener, Ontario.

The Thomas Lacey séance collection accrual includes several files of séance reports that contain details regarding the sitters involved in the séance circles and messages on various topics from spirits alleged to have communicated through the medium Thomas Lacey.