1965 BELL TELEPHONE EDUCATIONAL FILM " WE LEARN ABOUT THE TELEPHONE " 10064
1948 BELL TELEPHONE INDUSTRIAL FILM "BEFORE YOUR TELEPHONE RINGS" PHONE INSTALLATION 64374
AT&T Archives: What is the Bell System?
The Bell Effect Revisits the 1975 New York Telephone Company Fire
The Bell Telephone Company, a common law joint stock company, was organized in Boston, Massachusetts on July 9, 1877, by Alexander Graham Bell's father-in-law Gardiner Greene Hubbard, who also helped organize a sister company — the New England Telephone and Telegraph Company. The Bell Telephone Company was started on the basis of holding "potentially valuable patents", principally Bell's master telephone patent #174465.