United States. Works Progress Administration. "Hopkins Cites WPA Airport and Construction Program as National Defense Factor; Announces Approval for Extension of Aviation Facilities : December 4, 1938, 4-1839,"
Press Releases of the Works Progress Administration
(December 4, 1938).
https://fraser.stlouisfed.org/title/6753/item/619826, accessed on December 12, 2024.