Bell System Technical Journal volume XXXVII Number 3 May 1958 ; vol 37 no 3.
BSTJ, American Telephone & Telegraph, 1958, pp 581-834 inclusive, references, photographs, diagrams.
BSTJ, American Telephone & Telegraph, 1958, pp 581-834 inclusive, references, photographs, diagrams.
AT&T BSTJ 1958, diagrams, references; three individual issues.
American Telephone & Telegraph Co, 1958; i-vi, pp 1091-1326, illus, photos, references.
American Telephone & Telegraph Co, november 1958, pp 1327-1672; illus, photographs, references.
BSTJ vol XXXVII numbers 1 & 2, January and March 1958; Blackman & Tukey's article in 2 parts.