The forestry people have listings of people who have
trees for sale and their customers, many of whom are small millers with portable band saw mills. I once bought all of the maple tops from a bush near Kincardine for $5 each. The Ministry of Natural Resources gave me the contact information of the
land owner, but had no part in the deal that we made. The most under utilized wood in Ontario, is shag bark hickory. The stuff is super heavy and strong. They were $2 each back in 1985.