Agreed, but I will take a shot here since I see this now.  This is a really
old trailer.  If it is in perfect shape and everything works and it glows
with coolness, then I might consider it.  I would need to see it and really
check it out though.

Popups stay very dry inside when set up right and there are no leaks (one of
the things I would suspect in original canvass that old - attack it with a
hose when set up to try that out).  My popup can withstand a pretty vigorous
rainstorm (and has) without the inside getting any wet at all.  The key is
that you are off of the ground.

Once you get the hang of how to do it, set up is easy.  2 weekends ago it
took me the same time to set up my popup as it did the guy next to me in a
big dome tent.  The hardest part is the cranking up of the roof.  I
generally do all the setting up of it myself, alone, and then the wife takes
over to assemble the stuff inside when I am done.  I do get a bit of help
with someone holding up one of the awning poles as I get the other one in
place though.  I suspect that a 1978 popup will be a lot more difficult to
set up than the newer ones.  You will really need to try it out.
Tomes