WPA Improvements to Nation's Airways to be Shown at National Aviation Forum Next Week : May 24, 1940, 4-2134
United States. Works Progress Administration. "WPA Improvements to Nation's Airways to be Shown at National Aviation Forum Next Week : May 24, 1940, 4-2134," Press Releases of the Works Progress Administration (May 24, 1940). https://fraser.stlouisfed.org/title/6753/item/619915, accessed on May 6, 2024.