Columbia subject headings:
Book industries and trade--Canada--History.
Booksellers and bookselling--Canada--History.
Printing--Canada--History.
Publishers and publishing--Canada--History.
Harvard subject headings:
Book industries and trade--Canada--History.
Printing--Canada--History.
Publishers and publishing--Canada--History.
Princeton subject headings:
Book industries and trade--Canada--History.
Printing--Canada--History.
Publishers and publishing--Canada--History.