ALS, Aurora Historical Society, Aurora, Illinois. See Lincoln's letter of November 10, 1854, and note, supra.
 Benjamin S. Edwards.
 The Rock Island cases, concerned with patent infringement, were related to the case of Z. Parker v. Charles Hoyt, alleged infringement of patent on a water wheel, in which Lincoln had represented Hoyt before the U.S. District Court, July 9-24, 1850. Cushman and the several other persons involved in the suits have not been identified.