Sybille Oltea Yvonne Pantazzi (1914-1983) was the Librarian at the Art Gallery of Ontario for thirty-two years, a book-collector and a pioneering scholar in the area of Victorian book design. She was born in Romania, traveled widely as a young woman, and settled in Toronto at the end of the Second World War. Among her many interests were book jackets and the artists who created them.
Beth (Mary Elizabeth) Southcott, née Woolger, 1923-2004, was an amateur artist and art writer based in the Clarkson area of Mississauga. She was interested in visual art throughout her life, taking courses as a child at the (then) Art Gallery of Toronto and the Ontario College of Art, and later serving as the director of Visual Arts Mississauga. Southcott became interested in Indigenous art as an outcome of a course she took at Erindale College (now University of Toronto Mississauga) in 1975. Her book The Sound of the Drum is an original contribution to the historiography of Anishinaabe art and its reception by settler audiences.
Randall Speller is a historian of book illustration who worked for many years as a librarian at the Art Gallery of Ontario.
Robert Stacey (1949-2007) was an art historian, author, editor, picture editor and curator based out of Toronto. He wrote numerous books and articles on C.W. Jefferys and many other aspects relating to Canadian art and graphic design, with titles including The Hand Holding the Brush: Self Portraits by Canadian Artists, Canadian Bookplates, Massanog: the art of Bon Echo, and Sir Daniel Wilson (1816-1892): ambidextrous polymath. Robert Stacey was the grandson of C.W. Jefferys.