iirc i saw johnston's name more than once on recent cds... for now all i can add is that he's on one trackj of daniel jackson's cd "life is but a dream"
http://cdbaby.com/cd/jacksondaniel3 (fine cd though i wouldn't get it just for four minutes of johnston's drumming (in a trio with jackson on tenor and art hillary on organ))
a similar surprise (at least for me) recently was this dan fogel cd on cdbaby which has billy james on drums
http://cdbaby.com/cd/fogel3some more surprising names on this one
http://cdbaby.com/cd/clarenceincluding johnston and horace tapscott veterans ed pleasant and ike williams...