Du Pont, William, 1855-1928 (correspondent), Ridsdale, Percival (correspondent)
Description
Letter from Percival Ridsdale, Secretary of the American Forestry Association to William du Pont, who was a member of the organization, informing him of the upcoming International Forestry Conference and about efforts to combat foreign plant importation and tree diseases including White Pine Blister Disease. Also included is a copy of the conference program.