Jay Honeck wrote:

I have been unable to find any pilot who actually used that facility
for what it was intended (It was designed so that you could taxi in
one side, close the gigantic doors, unload in climate-controlled
comfort -- and then taxi out the other side.) Pilots who may have
flown into Iowa City during that time are at least 75 or 80 years old
now, so time is running out on finding them.

Were United pilots unionized back then? If so, is the union still around? Many unions
print a quarterly magazine or newsletter, and retirees will be on the mailing list.
They might accept ads. In fact, whether the union existed at that time or not, you
might try an ad in modern pilot's union publications. You might connect with someone
who flew with one of these old birds and still keeps in touch.

George Patterson
If a man gets into a fight 3,000 miles away from home, he *had* to have
been looking for it.