found: Smith, J. Groovin' at Smalls' Paradise, p1999:label (Rudy Van Gelder, recording engineer)
found: New Grove, 2nd ed., WWW site, Mar. 27, 2003:jazz (Van Gelder, Rudy; b. ca. 1925, Jersey City, N.J.; recording engineer)
found: Wikipedia, Nov. 19, 2007(Rudy Van Gelder; b. Nov. 2, 1924, Jersey City, N.J.; recording engineer specializing in jazz)
found: Washington post WWW site, viewed Aug. 30, 2016(Rudy Van Gelder, the audio engineer who helped shape the sound of modern jazz on thousands of recordings, died Aug. 25 [2016] at his home in Englewood Cliffs, N.J.; he was 91; Mr. Van Gelder's home was also the site of his recording studio for more than half a century; Rudolph Van Gelder was born in Jersey City, N.J., on Nov. 2, 1924)
notfound: New Grove dict. of jazz