[The "List Documents" button at the bottom of this note will display a list of individual litigation records bound together into a single volume. To view the volume in its entirety, use the first link ("Litigation Records") on the list.]
This file consists of testimony on behalf of Edison in the case of Sprague v. Edison, which involved conflicting claims over electric meters. Included are depositions, taken during the period 1883-1888, by Edison and longtime associates Charles Batchelor and John F. Ott. John T. Sprague was a British inventor and author of Electricity: Its Theory, Sources, and Applications and other works.
Related interference records can be found in the Litigation Series in Thomas A. Edison Papers, Part II (1879-1886).
[W100DH] Litigation Record, 1883-1888 1883-1888
[W100DH001] Index, Undated 
[W100DH002], Legal Testimony, Thomas Alva Edison, April 15th, 1883 1883-04-15
[W100DH003], Legal Testimony, Thomas Alva Edison, November 17th, 1885 1885-11-17
[W100DH052], Legal Testimony, Charles Batchelor, August 9th, 1888 1888-08-09
[W100DH056], Legal Testimony, John F Ott, August 9th, 1888 1888-08-09