The Bell System Technical Journal, Volume XLIV no. 2, February 1965.
AT&T 1965, pp 207-372 inclusive, diagrams and photographs, references.
AT&T 1965, pp 207-372 inclusive, diagrams and photographs, references.
BSTJ issued December 1959, printed inside rear cover; published in BSTJ November 1959; 30 pages, diagrams, references.
Bell Tel. Labs, NY 1947, 1956, 1963, 43 pages, diagrams, tables, references.
Bell System, November 1970, pp 1995-2415 inclusive, diagrams, references, some photographs.
Bell Telephone System Technical Publications, monographs, 8.5x11 blue-gray covers, stapled bindings, var. pagination, 5-hole punched at margins.
Bell Telephone Laboratories, November 1926, Reprint B-212, reprint of a paper presented at annual meeting of telegraph and telephone section of the Ameircan Railway Association September1926; and published in their Proceedings; 16 pages, some illustr.
AT&T, issued October 1953, orig. published in The Bell System Technical Journal, vol 32, March 1953; 24 pages plus rear foldout chart.
American Insittute of Physics 1953, orig published in PHysical Review vol 91, September 1953; Bell Telephone Laboratories monograph, issued January 1954; 9 pages plus blank sheets at rear, double-column text, diagrams, references.