[CR]Please help identify these sprockets

Hello, I am trying to compile a database of sprockets to help people identify bikes. I have put up a webpage with a dozen sprockets which I am trying to identify. Most of them are probably off-topic balloon, but some may be for lightweights and track bikes. The page can be viewed at

http://home.comcast.net/~chriseye/sprockets.html

I have a couple of buckets of old sprockets, so over the next week, I'll be adding more to the page.
Thanks,
chris ioakimedes
Fairfax, California