You see the 7070 that I worked on was purchased by the
US government for a
very Top Secret installation so it may have been in use before the public
had access to it. Which, by the way, may also be why it was NOT solid
state, it was an early model ??
I can not imagine IBM making a tube version of the 7070, with no
history on it. That project would have been something as big as the
AN/FSQ-7. The 7070 was a pretty good sized machine.
So now you have a bunch of us wondering what machine you used. I still
doubt it was a 7070 if it had tubes. I bet it was a 700 series machine
of some sort. It could have been a 707 - IBM often gave oddball type
numbers out to semicustom or custom (AKA RPQ) machines. Have you
glanced at the IBM history pages? They have a gallery of most of their
major machines - perhaps you can spot it.
--
Will