The website Sugarbush Info maintains listings of over 500 maple syrup producers (sugarbushes) in the United States and Canada. Sugarbush Info also has listings for 13 maple syrup festivals in Canada and 14 in the United States.
Thanks to Canadians Bryan Exley and Merna Brown of Dunvegan, Ontario, whose Stonebriar Farm produces hand-crafted maple products (available year round); they maintain this informative directory of sugar bushes in North America. According to Rowan Jacobsen, the writer who celebrates great American Foods in American Terroir Savoring the Flavors of Our Woods, Waters, and Fields (Bloomsbury USA, New York, New York, 2010), the only suitable terroir in the world for maple syrup is the Greater Northeast, described as a triangle running from Michigan to New Brunwick (Canada) to West Virginia.
The Massachusetts Maple Producers Association, a non-profit organization dedicated to the preservation and promotion of maple sugaring in Massachusetts (a state where there are more than 250 sugaring operations), maintains a directory of Massachusetts sugar makers, who sell maple products to the public.