United States. Forest Service1 map : color; 28 x 40 cm on sheet 61 x 46 cmScale approximately 1:12 000 000 (W 125°--W 67°/N 49°--N 24°). ; 'M-5154'; 'Revised October 1948'.; 'U.S. Government Printing Office: 1948-O-807577'.; Includes text and table of 'Principal trees of the forest regions.'; Insets: Alaska -- Puerto Rico -- Hawaii.9980805970102441ark:/81985/n2f18vf6vUnited States Department of Agriculture, Forest ServicePublicForests and forestryForest regions of the United StatesMapsUnited States1948Northwestern University