[GreenKeys] Design at Teletype

[Ethan Blanton]

(I know I'm resurrecting a thread that's almost one year old, but I
 had this document on my to-read list, and I just got to it.)

Jim Haynes wrote:
> Attached is the preface to the designer's handbook.

What I want to know is ... what did they use to typeset this document?
It is proportional-spaced and full justified, yet appears to show
marks of having been input via something like a keyboard (missing
spaces and other keyboard-like typographical errors, the only emphasis
in use are all caps and underlining, etc.).  Is this the sort of
document that a typesetting Teletype with a 6-bit code could produce?
1956 is too early for it to have been computer typeset, yet it does
not look (to my untrained eye) like a Linotype or even hand-assembled
metal type output.  It's possible that artifacts of scanning led me to
that conclusion, however.

Does anyone have a guess as to how this document was produced?  Or
maybe it was _re_produced later with a computerized process, and
simply retained its 1956 date?

Ethan