Didn't Pearson's Blue Note trio LPs come out in the late 50s? So this wouldn't be "pre-BN" but "Blue Note interregnum", right?
Duke Pearson - Profile (Gene Taylor, bass, Lex Humphries, drums), recorded 10/25/59
Duke Pearson - Tender Feelin's (Taylor, Humphries), recorded 12/16/59
One trio track (Israel Crosby, bass, Vernel Fournier, drums), recorded 6/26/60, appeared on The Lost Sessions