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).
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1927. United States. Bureau of Public Roads. Eastern sheet Includes inset continuation of northern Kentucky counties: Boone, Kenton and Campbell.; "Data corrected to Jan. 31, 1927."; "Approved... Bureau of Public Roads (Washington, D.C).
1927. United States. Bureau of Public Roads. Eastern sheet Includes inset continuation of northern Kentucky counties: Boone, Kenton and Campbell.; "Data corrected to Jan. 31, 1927."; "Approved... 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).
1937. United States. Bureau of Public Roads. Geological Survey (U.S.). Cartographic Details: Scale 1:500,000 ; Modified polyconic projection (W 97‚Å∞15 π--W 89‚Å∞30 π/N 49‚Å∞23 π--N 43‚Å∞30 π). Sheets numbered 23NE, 23... The Bureau (Washington D.C.).
1933. United States. Bureau of Public Roads. Geological Survey (U.S.). Cartographic Details: Scale 1:500,000 ; Modified polyconic projection (W 97°--W 90° / N 48°--N 44°). Sheets numbered 23NE, 23NW, 23SE, and 23SW... The Bureau (Washington D.C.).
1927. United States. Bureau of Public Roads. Geological Survey (U.S.). Cartographic Details: Scale 1:500,000 ; Modified polyconic projection (W 97‚Å∞15 π--W 89‚Å∞30 π/N 49‚Å∞23 π--N 43‚Å∞30 π). Sheets numbered 23NE, 23... The Bureau (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).
1927. United States. Bureau of Public Roads. Base map from U.S. Geological Survey state map.; "Data corrected to Jan. 31, 1927." 70 x 137 centimeters, on sheets 79 x 55 centimeters Scale 1:760... The Bureau (Washington, D.C).
1926. United States. Bureau of Public Roads. Date corrected to Dec. 31, 1926.; "Base map from U.S. Geological Survey State map."; "Published in accordance with Act of Congress approved Nov. 9,... Dept. of Agriculture, Bureau of Public Roads (Washington, D. C).