Airway Map No. 136, May 1930: Boise Idaho to Pasco Wash.

This map depicts the corridor for flight navigation between Boise, Idaho, and Pasco, Washington, including major urban areas, roads, railroads, etc., and the location of airfields 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 May 1930.