Can't remember the source that identified Mobley...
From the Coltrane discography by John Thurlow
Coltrane 1958
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580925 - JOE BRAZIL AND HIS FRIENDS
John Coltrane, ts; Donald Towns, tp; Joe Brazil, Sonny Red, as; Joe Henderson, Hank Mobley, ts; Hugh Lawson, p; Ernie Farrow, b; Roy Brooks, d
Location : Joe Brazil's Basement, Detroit, MI
Date : September 25, 1958
a. “Blues Jam - Now's The Time” (19:41)
PRIVATE RECORDING
b. “Woody'n You” (8:10)
PRIVATE RECORDING
c. “Paul's Pal” (13:12)
PRIVATE RECORDING
d. “Sweet Georgia Brown” (12:34)
Notes: see The Coltrane Reference for more information.
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