found: NUCMC data from New Jersey Historical Soc. for Dickson, W.B. Papers, 1911-1932(name not given; United States Steel Corporation)
found: U.S.X. Corporation redirect Web site, April 13, 2003(Effective Dec. 31, 2001, USX Corporation was renamed Marathon Oil Corporation; United States Steel LLC, a former subsidiary of USX, became United States Steel Corporation through a tax-free spin-off of the steel business by USX Corporation)
found: United States Steel Corporation Web site, April 18, 2003(United States Steel Corporation; in late 1986 ... U.S. Steel Corporation changed its name to USX Corporation; in 1991, corporation divided into U.S. Steel Group and Marathon Group; in October 2001, a plan of reorganization resulted in the tax-free spin-off of the steel and steel-related businesses of USX [U.S. Steel Group] into a freestanding, publicly traded company known as United States Steel Corporation; the remaining energy businesses of USX became Marathon Oil Corporation)
notfound: United States Steel Corporation. Annual report, 2001: cover (United States Steel Corporation; USS) contents p. (United States Steel Corporation; United States Steel; separated from USX Corporation Dec. 31, 2001)