This map depicts the corridor for flight navigation between Richmond, Virginia, and Washington, D.C., including major urban areas, roads, railroads... Show moreThis map depicts the corridor for flight navigation between Richmond, Virginia, and Washington, D.C., including major urban areas, roads, railroads, etc., and the location of airfields, seaplane anchorages, and navigation beacons. It was compiled and printed for the Aeronautics Branch of the Department of Commerce by the Coast and Geodetic Survey, Washington D.C., in 1929. Show less