Federal Reserve Bank of New York. "4221. Margin Requirements Increased," Federal Reserve Bank of New York Circulars (April 22, 1955). https://fraser.stlouisfed.org/title/466/item/11683, accessed on April 24, 2024.
Federal Reserve Bank of New York. "4221. Margin Requirements Increased," Federal Reserve Bank of New York Circulars (April 22, 1955). https://fraser.stlouisfed.org/title/466/item/11683, accessed on April 24, 2024.