United States. Department of the Treasury. "Bureau of Ordnance and Hydrography," in United States. Department of the Treasury. "Report on the Finances, December 1849," Annual Report of the Secretary of the Treasury on the State of the Finances (1849) : 1030-1062. https://fraser.stlouisfed.org/title/194/item/5494/toc/132944 , accessed on April 26, 2024.