Category:Telephone by Elisha Gray
Media in category "Telephone by Elisha Gray"
The following 6 files are in this category, out of 6 total.
-
Bell-gray-smoking-gun.png 881 × 659; 341 KB
-
Gray-telephone-caveat.gif 432 × 657; 162 KB
-
Gray-telephone-notebook.gif 605 × 362; 64 KB
-
PSM V17 D023 Microphone and speaker by elisha gray 1874.jpg 1,609 × 723; 59 KB
-
PSM V17 D027 Carbon microphone of Elisha Gray.jpg 879 × 1,109; 179 KB