Welcome to the forums!
It all depends on what you have. Some of the out of production discs you have will probably not have any flight information, maybe just a general description at best. It would be neat if you listed what you have. We do have a resident historian of sorts by the name of Working Stiff. He's been in the game since the 80's I think and he can tell you a lot about what you have.
The wayback machine is a good source. It just indexes websites after updates. But the disc information will only go as far back as the first indexing. If the disc was taken out of production before the advent of the internet and Innova's web page then you will have to look at the discgolfsweden.se disc archive. most descriptions are in english but some of the older reviews are in swedish only.
links:http://web.archive.org/web/199704150853 ... discs.com/http://discgolfsweden.se/english/discar/discar.aspx