Federal Reserve Bank of New York. "4880. Offering of Two Series of Treasury Bills, $1,000,000,000 of 91-Day Bills, Additional Amount, $400,000,000 of 182-Day Bills," Federal Reserve Bank of New York Circulars (April 28, 1960). https://fraser.stlouisfed.org/title/466/item/12411, accessed on October 17, 2026.