This document provides a chronological listing of telegraph-related caveats filed by Edison between July 1, 1870 and March 23, 1875. The caveat numbers included on the list were assigned by the Patent Office at the time the caveats were received, and the numerical sequence began anew at the start of each year. This list of caveats appears in a volume of Patent Office proceedings and related material that was given to Edison by attorney Everett P. Wheeler. (See Volume 72, Quadruplex Case, Litigation Series.) Courtesy of Thomas Edison National Historical Park.