The Bell System Technical Journal vol. 56 no. 3, March 1977.
AT&T BSTJ, pp. 329 - 485 inclusive; diagrams, photographs, references.
AT&T BSTJ, pp. 329 - 485 inclusive; diagrams, photographs, references.
AT&T BSTJ, pp. 645 - 833 inclusive, diagrams, references, some abstracts.
AT&T BSTJ, pp. 1187 - 1429 inclusive, diagrams, references.
AT&T BSTJ, pp 921 - 1247 inclusive, references, diagrams, photographs.
AT&T BSTJ, pp. 1431 - 1680 inclusive, diagrams, references.
AT&T BSTJ, pp. 1355 - 1505 inclusive, diagrams, references.
AT&T BSTJ four individual issues 1970, diagrams, references.
AT&T BSTJ 1977 individual issues, diagrams, references.
AT&T 1978, pp 3097-3323 inclusive, diagrams, references.
AT&T 1978, pp 2769-3096 inclusive, diagrams, references.
AT&T 1978 pp 2575-2767 inclusive, diagrams, references.
AT&T 1978, pp 479-795 inclusive, diagrams, references.
AT&T 1978, pp 1231-1715 inclusive, diagrams, photographs, references.
AT&T BSTJ, pp. 2417 - 3019 inclusive, references, diagrams.
AT&T BSTJ, pp 1 - 206 inclusive, diagrams, references.
AT&T, pp 1609 - 1994 inclusive, references, diagrams, photographs.
AT&T 1978, pp 221-477 inclusive, references, diagrams, photographs.
AT&T 1970, pp 159-320, references, diagrams, photographs.
AT&T, 1978; pp 1 - 219 inclusive; references, illustrations.
AT&T, 1972, pp 1641-1931 inclusive, references, diagrams and photographs.
AT&T, October 1971, pp 2495 - 2856 inclusive, references, diagrams.
Bell System, November 1970, pp 1995-2415 inclusive, diagrams, references, some photographs.