United States. Bureau of the Budget and United States. Office of Management and Budget. "Corps of Engineers - Civil Works," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 2011," Budget of the United States Government (February 1, 2010) : 125-127. https://fraser.stlouisfed.org/title/54/item/19057/toc/390107 , accessed on April 25, 2024.