Allan Peterkin is the author of One Thousand Beards and One Thousand Mustaches, and the co-author of The Bearded Gentleman. His other books include The Bald-Headed Hermit and the Artichoke and Outbursts!. His comments on facial hair have appeared in Esquire, Men's Health, the New York Times, the Wall Street Journal, US, and in the documentary Mansome. He is a doctor and freelance writer in Toronto.