It seems to me that a lot of the older single-speed bikes were basically the same mechanically, which means there's not as many questions relating to them. Personally, I have little interest in older multi-speed bikes, but whatevery floats other people's boats. Also, it seems to me that stuff 25 years old should not be in the "Vintage Category", more in the "Seems Like It Hasn't Been That Long Since It Was New" category ("SLIHBTLSIWN").

If you don't do it, periodically peruse through all the forums, not just C&V, interesting stuff gets scattered around. Cottered cranks in "Bike Mechanics" for example.