Bell System Technical Journal volume XXXVII Number 5 september 1958; vol 37 no 5.
American Telephone & Telegraph Co, 1958; i-vi, pp 1091-1326, illus, photos, references.
American Telephone & Telegraph Co, 1958; i-vi, pp 1091-1326, illus, photos, references.
American Telephone & Telegraph Co, march 1956; pp 249-534; illus, photographs, refs; charts foldouts.
Bell Telephone System Monograph reprint B-118-1, offprint from Bell System Technical Journal.
Bell System Technical Journal, Bell Telephone Laboratories NY, monograph B-338, orig published IRE 1928; 5 pages plus blanks at rear, diagrams.
American Telephone & Telegraph, July 1954; pp 799-1022; illus, photos, refs; light blue paper wraps.
Bell Telephone Systems, 1953, orig. published The Bell System Technical Journal, vol 32, May 1953; separate offprint, Monograph 2123, 8.5x11 large size, pp 1-18.
AT&T, NY 1959, 1,603 pages plus index at rear; also bound-in are contents of monographs; diagrams, photographs, references.
Bell Tel. Labs, NY 1947, 1956, 1963, 43 pages, diagrams, tables, references.