United States. Bureau of Foreign and Domestic Commerce and United States. Bureau of the Census. "1907, Thirtieth Number," Statistical Abstract of the United States (1907). https://fraser.stlouisfed.org/title/66/item/22000, accessed on June 28, 2024.
United States. Bureau of Foreign and Domestic Commerce and United States. Bureau of the Census. "1907, Thirtieth Number," Statistical Abstract of the United States (1907). https://fraser.stlouisfed.org/title/66/item/22000, accessed on June 28, 2024.