Davidson, Joe. The Art of the Cigar Label. Secaucus,
N.J.: Wellfleet Press, ca. 1989.
Hyman, Tony. The World of Smoking and Tobacco at Auction. Claremont, CA: Treasure Hunt Publications, 1989.
Handbook of American Cigar Boxes. Elmira, NY: Arnot Art Museum, 1979.
Nee, Min Ron. An Illustrated Encyclopedia of Post-Revolution Havana Cigars. Germany: Interpro Business Corporation, 2003.
Brandom, Lee W. Canadian Revenue Group of BNAPS: Catalog of Tobacco Tax Paid Stamps of Canada and Newfoundland. British North American Philatelic Society, 1976.
Canadian Revenue Newsletter
Ryan, Christopher D. "An Introduction to Canadian Revenue Stamps," 2002
http://www.bnaps.org/tutor/tut_rev.htm