Tracy, pp. 58-59. Peter H. Watson was a patent attorney representing John H. Manny and associates, manufacturers of a mechanical reaper, who were being sued for alleged patent infringement by Cyrus H. McCormick, inventor of the McCormick reaper. Other attorneys associated with Watson on the case, in addition to Lincoln, were George Harding, a patent attorney of Philadelphia, and Edwin M. Stanton of Pittsburgh, later Lincoln's secretary of war. The trial took place in Cincinnati in September, but although Lincoln attended he took no part in the case. The story of how he was snubbed by his associates, Stanton in particular, has been told many times; a brief factual account may be found in Pratt, Personal Finances of Abraham Lincoln, pp. 54-56.