Federal Reserve Bank of New York. "5038. Offering of Two Series of Treasury Bills, $1,000,000,000 of 91-Day Bills, Additional Amount, $500,000,000 of 182-Day Bills," Federal Reserve Bank of New York Circulars (May 22, 1961). https://fraser.stlouisfed.org/title/466/item/12558, accessed on March 13, 2025.