The Bell System Technical Journal volume XLIV no. 3, March 1965, single issue.
AT&T, March 1965, pp 373-pp 546 inclusive, references, diagrams.
AT&T, March 1965, pp 373-pp 546 inclusive, references, diagrams.
AT&T 1965, pp 207-372 inclusive, diagrams and photographs, 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.