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�J <br />Exhibit 14a is a map of the United States on which this coverage is <br />indicated by a red outline. The areas stippled in red are in progress. <br />Exhibit lob is the Tulsa.sheet of this 1:250,000 map series which is <br />printed with relief shading. <br />15. State Maps Showing Civil Boundaries. <br />The United States Census Bureau has published State outline maps <br />showing county boundaries and other civil boundaries at a scale of one inch <br />equals twelve miles, approximately. These maps are useful in many ways for <br />economic studies, especially those concerned with census statistics on <br />agriculture, commerce, population, etc. <br />Exhibit 15 is the United States Census Map of Missouri showing civil <br />boundaries. <br />16. Report of the Board of Surveys and Maps, dated October 1934• <br />Exhibit 16 is a report which presents a national mapping plan for the <br />United States and includes a status map on which priorities for mapping <br />are indicated. <br />17. Recreational Areas. <br />Exhibit 17 is a map of the United States prepared by the Department of <br />the Interior, dated July 1948, showing recreational areas, the principal <br />highways, and much other information of general interest. <br />21. Aeronautical Chart Series 1 :500,000. <br />Aeronautical Charts, with or without aviation data, compiled at scales <br />of 1 :500,000 and 1 :1,000,000, showing contours at 500 foot intervals, <br />drainage patterns, railroads, principal towns, and principal highways, <br />`are available for the river basin areas, from the Coast and Geodetic Survey. <br />22. An official map of the State of Louisiana at a scale of six miles <br />to the inch has been compiled by the Department of Public Works of that State. <br />This map shows all cultural data, parish boundaries, national'parks, <br />game preserves, outline of swamp areas, and all streams longer than two miles. <br />An official base map of the State of Missouri is now in the process of <br />preparation, showing 200 foot contours. <br />The Geological Survey, bi cooperation with the State of Oklahoma, is <br />compiling a base map of that State, somewhat similar to the official map <br />of the State of Louisiana. <br />23. Existing basic control surveys, including triangulation, transit <br />traverse and levels have been assembled in Index form for each State in the <br />Basin Area. <br />Such maps are obtainable for your use from the U. S. Geological Survey, <br />Topographic Division, Rolla, Missouri. <br />C-9 <br />