. Masters of space: Morse and the telegraph; Thompson and the cable; Bell and the telephone; Marconi and the wireless telegraph; Carty and the wireless telephone; . PROFESSOR BELL S VIBRATINGREED PROFESSOR BELL S FIRSTTELEPHONE - ■, , r C ■ C - ■ THE FIRST TELEPHONE SWITCH-BOARD USED IX NEW HAVEN,CONN., FOR EIGHT SUBSCRIBERS. EARLY NEW YORK EXCHANGE Boys were employed as operators at first,but they were not adapted to the work so wellas girls.

---

Size: 2014px × 1241px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelephone, bookyear19