Actually, "Fingerpickin'" and "Far Wes" are both currently in print, and between them, they contain all the tracks from "Montgomery Brothers" and the tracks from "Kismet" on which Wes had a solo (on the other "Kismet" tracks he just played rhythm). So, while I'd love to see a Select with OOP or unreleased Montgomery, these 4 PJ albums are pretty much covered (except for the rhythm-only tracks on "Kismet") by the 2 CD's still in print.
By the way, TM, if you're digging the Half Note date, you should really check out the 2-CD Definitive set "Complete Live in Paris 1965." From the same period as "Half Note," it has great music (including a guest appearance by Johnny Griffin) and sound. You can read a fairly in-depth AMG review and hear samples here.