I'm going to the co-op today so I might just find something there. I also found a wheelset on CL for $10 that were taken off an old Peugeot. If nothing turns up from those two leads, then I'll probably buy one of these two sets (or something else that might get presented on bikeforums).

Which of those two would you take? Both sellers told me they would take a 5 speed freewheel.

edit: for now, I'm not worried about the wheels being period correct. It's enough of a pain in the ass just finding something that fits for a reasonable price, much less finding a period correct set with campy hubs