This is 1947 biography movie about how Alexander Graham Bell and his partner Thomas Augustus Watson invented the first discernible speech, transmitted over a telephone.
| Actor | Role |
|---|---|
| RRaymond Edward JohnsonAlexander Graham Bell | Alexander Graham Bell |
 Mason AdamsThomas Watson | Thomas Watson |
| SSara AndersonMabel Anderson | Mabel Anderson |
 Taylor HolmesGardiner Hubbard | Gardiner Hubbard |
 Jed ProutyWillis J. Watson | Willis J. Watson |