Biodiversity Heritage Library
By "Acker, S. L. "
Forest atlas of the national forests of the United States. Columbia folio.
By: United States. Forest Service. - Greeley, W. B. - Meekham, H. S. - Acker, S. L.
Publication info: [Washington, D.C.?] :U.S. Department of Agriculture, Forest Service,1920.
Holding Institution: U.S. Department of Agriculture, National Agricultural Library