You can find Masthead at these fine retailers:

Nova Scotia
Atlantic News, Halifax
Daily Grind News Stand, Halifax

New Brunswick
Loto 7 Book Corner, Bathurst
Reid’s Newsstand – United Bookstore, Fredericton

Ontario
W. & R. Greenley Booksellers, Belleville
The Bookshelf, Guelph
Novel Idea, Kingston
York University Book Store, North York
Britton's, Ottawa
Britton's Westboro, Ottawa
Glebe Smoke Shop, Ottawa
Mags & Fags, Ottawa
Wellington Street News, Ottawa
Smokers Plus, St. Catharines
Book City #01 (Annex), Toronto
Book City #03 (Danforth), Toronto
Book City in the Village, Toronto
Pages Books & Magazines, Toronto
Presse Internationale #1 (Bloor), Toronto
Presse Internationale #2 (College), Toronto
Presse Internationale #3 (Danforth), Toronto
Presse Internationale #4 (Queen), Toronto
This Ain't The Rosedale Library, Toronto

Manitoba
McNally Robinson Booksellers (WG), Winnipeg

Alberta
Daily Globe News, Calgary
With the Times, Calgary
The Front Page, Edmonton

British Columbia
Caryall Books, Quesnel
Does Your Mother Know?, Vancouver
Magpie Magazine Gallery Inc., Vancouver
Mayfair News, Vancouver
People's News & Magazines, Vancouver
SFU Bookstore @ Harbour Centre, Vancouver
The Front Page, Vernon