Various cards, letter, diagrams, and notes on the life of Simon McTavish and his family as received by Baylis from multiple incoming correspondence. A sizable amount of communication with Chiswick Parish Church Vicar, Rev. E. P. Gough, including a Parish magazine from June 1922. Also included are the inscriptions on the monuments of the children of Simon McTavish (William d.1818, Ann d. 1819, and Simon d. 1828) found at Chiswick in London, England.

Various outgoing and incoming correspondence mostly asking for information for research on Simon McTavish. Included is correspondence with the Public Archives of Canada and copies of 5 documents about the intended purchase of the McTavish grounds by the Government in 1828, sent by the Archives in response to a reference request by Baylis.