Voir l'article "Le mythe d'Edison et de son téléphote"
New York Times, May 13 1891
Morning journal and courier., May 13, 1891
The Critic and Record, May 13, 1891
Alexandria Gazette, May 13 1891
The Sun, May 13, 1991
Los Angeles Herald, May 13, 1891
Indianapolis Journal, May 13, 1891
Der Deutsche Correspondent., May 14, 1891
Dakota Farmers' Leader, May 21, 1891
The Globe Republican, May 20 1891
The Southern Herald, May 22, 1891
The Wichita Daily Eagle, May 24, 1891
The Wheeling daily intelligencer., May 25, 1891
The Helena Independent, May 25, 1891
The weekly Thibodaux sentinel and journal of the 8th Senatorial District. May 23, 1891.
The Caldwell Tribune, May 23, 1891
Wellington Post,June 27, 1891
Indianapolis Journal, 14 Mai 1891
Pittsburgh Dispatch, 17 Mai 1891
Saint Paul Daily, 19 mai 1891
The Morning Call, 21 mai 1891
The Mayville Time, 13 Mai 1891
Omaha Daily Bee, 18 mai 1891
The Helena Independent, 24 mai 1891
The Wheeling Daily Intelligencer, 25 mai 1891
The Sedalia weekly bazoo., May 26, 1891
Pittsburg dispatch., May 27, 1891
The Wahpeton times., May 28, 1891
