My experience with IBM legal (who were actually quite
communicative when
I approached them) on that front with IBM 1410 manuals suggests to me
that they will not ever give explicit permission, because nobody at IBM
will ever by confident that they won't end up giving away some trade
secret or other.
We (Techworks in Binghamton, NY) work with the archivist quite a bit,
and are a=on very good terms.
Nope, they simply did not keep much from that era. It was probably
disposed of back when IBM was in trouble 30 years ago.
--
Will