Bell telephone quarterly [microform].
American Telephone and Telegraph Company.Information Department.
New York : American Telephone and Telegraph Co.,
1922-1940.
"A medium of suggestion and a record of progress."
Microfilm.
Issued by the Information Dept., American Telephone and Telegraph Co.
Vol. 1 (1922)-v. 25 (1946/47) on Reel 1 (includes index to vols. of subsequent title)
Telephone
Bell telephone magazine