[GreenKeys] Manuals for Teletype 56D aka At&t 513 aka At&t 4425 Terminal

[Jeff G]

Anyone gots any books/manuals to these? Since Nick has every Teletype
document under the sun I figured I'd try here and see if something pops up.
This is a CRT terminal that sort of has an identity crisis - Its Teletype
labeled on the back as a Teletype 56D, but has At&t 513 badging on the
front and supposedly from searches comes up as an At&t 513, 513BCT, 4425,
or others. This is probably one of Teletypes last products per se.

These were used a lot on PBXes like At&t Definitys from what I understand.
They're not too common per se but I've seen a few, and now own one myself.
Seems I managed to bring it back from the dead (was told it was a "barn
find") but no books/manuals on it.

If anyone did have the book I'd be glad to scan it and/or upload to Nick
and the Internet Archive.

Jeff KC3GJX
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