1927. United States. Bureau of Public Roads. Shows different types of federal roads and national forests. Pavement types shown by letters.; "Base map from U.S. Geological Survey state map."; "... Dept. of Agriculture, Bureau of Public Roads (Washington, D.C).
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1927. United States. Bureau of Public Roads. Base map from U.S. Geological Survey state map.; "Data corrected to Dec. 31, 1927." 71 x 137 centimeters, on sheets 79 x 55 centimeters Scale 1:500... Dept. of Agriculture, Bureau of Public Roads (Washington, D.C).
1927. United States. Bureau of Public Roads. Maps shows U.S. Highways, National parks, monuments, military reservations, and forests, improved and under construction roads, and pavement types.... Dept. of Agriculture, Bureau of Public Roads (Washington, D.C).
1927. United States. Bureau of Public Roads. Date corrected to Dec. 31, 1927.; "Published in accordance with Act of Congress approved Nov. 9, 1921, creating the Federal Aid Highway System."; "... Dept. of Agriculture, Bureau of Public Roads (Washington, D.C).