Jimmy Smith didn't popularise the organ in the black community. He did popularise it in the white community, of course.
Wild Bill Davis was the man in the black community. His recordings for OkeH were the real start of the organ movement. He was followed quickly by Bill Doggett and Milt Buckner (though I've never been sure of how popular in the black community Buckner really was). Eddie "Lockjaw" Davis started the tenor/organ concept in 1951, but those recordings for Roost never sold, though they're interesting. But from 1956, his recordings with Shirley Scott on King, Roulette and then Prestige, leading up to the classic Cookbooks of 1958 were another very important factor in the spreading popularity of organ jazz in the black community.
It seems to me that JOS didn't get into targeting the black audience until the sessions, which I think were intended to produce juke box 45s, rather than an album, of 1958 and 1959, which eventually made up "Home cookin'", then in 1960, "Open house" & "Plain talk" (neither of which was issued at the time), and a month later "Midnight special" & "Back at the Chicken Shack". That's my impression; I know you know people at Blue Note, Kevin. Is there any knowledge there (now) of what market Lion and Wolff were aiming at with different recordings? (correspondence and stuff - or someone as long in acquaintance as Chris Albertson, who could come in here?"
MG
Really glad you are back, MG!