Great story! Thanks for sharing. For more on the subject:
Daniel Grafton Hill III, one of our African-American-Canadian notables, wrote a book: “The Freedom-Seekers: Blacks In Early Canada”, 1981 (Reference Code: 301.45196071 H54, Archives of Ontario Library) The Archives of Ontario website explains:
"Although other scholars had already written about the history of Blacks in Canada, Daniel Hill became the first person in the country to write a popular history on the subject. The book found a broad readership, and remained in print for 21 years until its final publisher, Stoddart Publishing Company, went bankrupt in 2002. Sadly, The Freedom Seekers disappeared with its publisher, although it remains available in Canadian libraries."