United States. Works Progress Administration. "Hopkins Reports 20,000,000 Persons Have Attended WPA's Music Concerts During Six-Month Period : August 29, 1936, 4-1289,"
Press Releases of the Works Progress Administration
(August 29, 1936).
https://fraser.stlouisfed.org/title/6753/item/619596, accessed on December 2, 2024.