I have FF miles with NW that could be used and have never been to SFO. I'll keep the date open, although it's probably the same weekend as the EAA fly-in in Oshkosh.

For you airline memoribilia collectors, I have 1971 KLM route booklets, menu and itinerary for the Mercedes Benz Safari, including ground schedule. They may be listed on ebay, unless I get a better offer. :lol