That is because Griffin was under contract with Riverside at the time, and Davis with Prestige.  Davis helped a lot to start Scott's career. They first recorded for King in 1956, then for Roulette and Roost. They did a lot more sessions for Prestige, the Craft box collects only the "Cookbook" albums from June 20, September 12, and December 5, 1958.  The European budget label Solar Records did this years ago, fitting all on only three CDs inluding a bonus LP - Craft limits each CD to