
by Elisha Gray

by Michael Faraday

by James Clerk Maxwell

by Wm. H. (William Henry) Meadowcroft

by W. H. (William Henry) McCormick

by Charles R. (Charles Robert) Gibson

by John Munro

by Thomas M. (Thomas Matthew) St. John
by Thomas A. (Thomas Alva) Edison
by Garret A. (Garret Augustus) Hobart