Bopp, Karl R. (Karl Richard), 1906-1979 and Federal Reserve Bank of Philadelphia "Notes on Talk before F.R.B. Chairmen's Conference." Washington, D.C., December 10, 1948, https://fraser.stlouisfed.org/title/1013/item/1002, accessed on May 1, 2024.
Bopp, Karl R. (Karl Richard), 1906-1979 and Federal Reserve Bank of Philadelphia "Notes on Talk before F.R.B. Chairmen's Conference." Washington, D.C., December 10, 1948, https://fraser.stlouisfed.org/title/1013/item/1002, accessed on May 1, 2024.