United States. Bureau of Foreign and Domestic Commerce and United States. Bureau of the Census. "1917, Fortieth Number," Statistical Abstract of the United States (1917). https://fraser.stlouisfed.org/title/66/item/22025, accessed on July 17, 2024.
United States. Bureau of Foreign and Domestic Commerce and United States. Bureau of the Census. "1917, Fortieth Number," Statistical Abstract of the United States (1917). https://fraser.stlouisfed.org/title/66/item/22025, accessed on July 17, 2024.