Biodiversity Heritage Library
By "Preston, Howard W. (Howard Willis), 1859-1936"
Illustrated key to the wild and commonly cultivated trees of the northeastern United States and adjacent Canada based primarily upon leaf characters /
By: Collins, J. Franklin (James Franklin) - Preston, Howard W. (Howard Willis),
Publication info: Toronto :McClelland and Goodchild,c1912.
Contributed by: Canadiana.org (archive.org)