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This file consists of testimony on behalf of Edison in the case of Edison v. Lane v. Gray v. Rose v. Gilliland, which involved conflicting claims over dynamos. Included are depositions, taken during the period December 1881-July 1882, by Edison, his longtime associate Edward H. Johnson, his former partner Joseph T. Murray, electrical manufacturer Sigmund Bergmann, and Menlo Park employees Martin N. Force, John Kruesi, John F. Ott, and Charles Wurth.

Related interference records can be found in the Litigation Series in Thomas A. Edison Papers, Part II (1879-1886).

Courtesy of the National Archives.