Federal Reserve Bank of San Francisco. "1966 Index," Economic Review (Federal Reserve Bank of San Francisco) (1966). https://fraser.stlouisfed.org/title/869/item/33419, accessed on April 18, 2024.
Federal Reserve Bank of San Francisco. "1966 Index," Economic Review (Federal Reserve Bank of San Francisco) (1966). https://fraser.stlouisfed.org/title/869/item/33419, accessed on April 18, 2024.