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accuracy activities aerial photographs aeronautical charts agencies Alaska alidade American Congress Annual Meeting areas base maps Board of Direction boundary Box 346 Sacramento Bulletin Calif Cartographic Chairman Chattanooga City Civil Engineering Coast & Geodetic Coast and Geodetic Committee Congress on Surveying contours coordinates course Director discussion Engr Executive Secretary Federal feet field Forest Service Geodesy geodetic control Geodetic Survey Geographical Hydrographic Office Institute instrument interest Iowa land surveying lines Mail application Maps and Surveys membership methods National nautical charts navigation NW Washington organization P. O. Box photogrammetry Plane Coordinate Systems planetable planning Pound Bldg Prof profession projects Region Region 9 scale Section sheets soil square miles stations Street Survey Washington surveying and mapping Technical Division Tenn Tennessee Valley Authority Texas tion Topographic Engineer topographic maps triangulation U. S. Coast U. S. Geological Survey United Vice President Washington Whitmore