James W. McDonough vs. A. Graham Bell, Elisha Gray and othersJames W. McDonough, Alexander Graham Bell, Elisha Gray, W. C. Hicks, S. A. Duncan, United States. Patent Office · First published 1881Open the Tome
The invention of the electric speaking telephoneAlexander Graham Bell, Elisha Gray, Thomas A. Edison · First published 1881Open the Tome
