This 198-page pamphlet contains testimony and exhibits on Edison's behalf. Edison lost the interference; a favorable ruling on appeal was overturned, and the application (Case 187) was not issued as a patent. However, most of the record from the interference (including testimony by Edison, Charles Batchelor, and Francis R. Upton) was later entered as evidence in Edison Electric Light Company v. United States Electric Lighting Company and can be found with the other records from that case. Both the interference and the lawsuit relate to Edison's early work on incandescent lamps; the court case concerns the validity of Edison's U.S. Patent 223,898, his first carbon filament lamp patent.
Related interference records can be found in Records of the Patent and Trademark Office (Record Group 241) in the National Archives.
[QD006] Litigation Record, c. 1881 1881-00-00
[QD006095], Letter from William Edward Sawyer to New York Sun, December 21st, 1879 1879-12-21
[QD006098], Legal Testimony, Martin N Force, June 27th, 1881 1881-06-27
[QD006104], Legal Testimony, Edward Hibberd Johnson, June 27th, 1881 1881-06-27
[QD006109], Legal Testimony, John Kruesi, June 27th, 1881 1881-06-27
[QD006131], Legal Testimony, John Kruesi, June 30th, 1881 1881-06-30
[QD006182], Legal Testimony, Stephen Dudley Field, July 20th, 1881 1881-07-20
[QD006184], Legal Testimony, Thomas Bliss Stillman, July 20th, 1881 1881-07-20
[QD006188], Legal Testimony, William Sawyer, July 20th, 1881 1881-07-20
[QD006191], Legal Testimony, James A Russell, July 20th, 1881 1881-07-20
[QD006193], Legal Testimony, James D Potter, July 20th, 1881 1881-07-20
[QD006195], Legal Testimony, James E O'Keeffe, July 20th, 1881 1881-07-20
[QD006198A], Letter from William Edward Sawyer to New York Sun, January 5th, 1880 1880-01-05
[QD006198B], Petition, Thomas Alva Edison, U.S. Interior Dept. Secretary, Henry Moore Teller, October 17th, 1883 1883-10-17