I wish I had - only some excerpts so far, which were pretty good. Would be a great choice for a Mosaic Select.
Yes, they really are excellent. IMO they're better than his recent ones on Mack Avenue but then, even slightly-lesser Gerald Wilson's are worth hearing.
BTW quite a few of his Discovery albums are available on Amazon at quite reasonable prices
The Discovery LPs are great - I have all of them, I think. 'Lomelin' is particularly good. The only negative is the tinkly electric piano, which sounds a bit dated in an 80s way on some of the material. At this time Gerald still had real A-team soloists on board too (Ernie Watts, Harold Land, Oscar Brashear etc.)
Just listening to this one at the moment - recommended !