Center Acer
http://www.centreacer.qc.ca

QC Ministry of Agriculture, Fisheries and Food
http://www.agrireseau.qc.ca

University of Vermont Extension
http://www.uvm.edu/~uvmaple

Proctor Maple Research Center
http://www.uvm.edu/~pmrc/

Cornell University, New York State
http://maple.dnr.cornell.edu/

Ontario Ministry of Agriculture, Food and Rural Affairs
http://www.omafra.gov.on.ca/french/

Agricultural Canada Statistics on Maple
http://www.statcan.ca/english/freepub/23-221-XIB/free.htm

U.S. Department of Agriculture Statistics on Maple
http://www.usda.gov/nass