[GreenKeys] Riddle me this... If a TWX was installed in 1955 would it be a 15 or a 28?

[dmm at lemur.com]

Ed wrote:
Riddle me this...  If a TWX was installed in 1955  would it be a 15 or a 28?

and Wayne replied
>Neither, it would be an ASCII machine if it was on the common TWX system. 

I certainly do not know my history here, but ATT did publish a series
of booklets on using the Models 15, 19, and 28 on TWX service during
this period.

The ones I've seen and/or scanned were published in
1949 (model 15, 19)
1962 (model 15, 19, 28 KSR, 28 ASR)
These are (mostly) online at:

http://www.circuitousroot.com/artifice/telegraphy/tty-biblio/att/index.html

Of course, 1955 is right in the middle here, so this information
doesn't help Ed at all - sorry.

The corresponding booklet for the Model 35 in TWX service (also
scanned via the page above) is undated and (to judge by the design
of its cover) slightly later.

Regards,
David M.
===
Dr. David M. MacMillan  -  dmm at lemur.com

   The first rule of intelligent tinkering is to save all the parts.
       - Paul Ehrlich (1854-1915); Aldo Leopold

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