Evenson, A. Edward. The Telephone Patent Conspiracy of 1876: The Elisha Gray - Alexander Bell Controversy. North Carolina: McFarland. 2000. ISBN 0-7864-0883-9.
Baker, Burton H. The Gray Matter: The Forgotten Story of the Telephone. St. Joseph, Mi.: Telepress. 2000. ISBN 0-615-11329-X.
Coe, Lewis. The Telephone and Its Several Inventors. North Carolina: McFarland Publishers. 1995. ISBN 0-7864-0138-9.
Patterson, Boyd Crumrine. The Story of Elisha Gray. Western Pennsylvania History. January 1969, 52 (1): 29–41. (原始内容存档于December 12, 2012).
Dr. Lloyd W. Taylor, an Oberlin physics department head, began writing a Gray biography, but the book was never finished because of Taylor's accidental death in July 1948. Dr Taylor's unfinished manuscript is in the College Archives at Oberlin College.