Federal Reserve Bank of San Francisco. "National Bird," Economic Letter (Federal Reserve Bank of San Francisco) (December 24, 1976). https://fraser.stlouisfed.org/title/4960/item/527283, accessed on July 29, 2024.
Federal Reserve Bank of San Francisco. "National Bird," Economic Letter (Federal Reserve Bank of San Francisco) (December 24, 1976). https://fraser.stlouisfed.org/title/4960/item/527283, accessed on July 29, 2024.