I have a very large collection of stan kenton and i believe some of them are worth a bit of money?

does anyone know how much or which ones

The Stan Kenton fan club is quite aged at this time and many are in their 70s and 80s. I don't think they are going to spend 'collector's value' on a bunch of old records.

Vinyl recordings are very difficult to appraise and assess for a true market value and moreso in this case, as there is a pretty small market for Kenton's music. You can try selling them on eBay, but don't expect to make a landfall profit on these.