As I started this topic which went nowhere perhaps this little insight might find some interest at this new forum. From Record Research 88 (Jan 1968 p.4):
OTIS SPANN RECORDS AGAIN
We had the good fortune to sea and hear another recording session, this time documenting the MUDDY WATERS band of November 1967 - featuring the great bluesman 0TIS SPANN on vocal and piano.' Otis is the Muddy Waters perennial who has coma a long way from Jackson Mississippi. Beginning as an 8 year old child prodigy he can now boast of 30 year seniority in the business. For more than a decade ha has been with Muddy Waters. His accomplishments have bean well documented all over this world. His feature recordings are assuming classic value and will be future evergreens. On November 20, 1967 Otis Spann added a fresh new page to his recording activities with another visit to the studio to record his second album for ABC's "BLUESWAY''. In accompaniment were the Muddy Waters Blues Band. Also participating was promising Blues starlet Miss LUCILLE WILSON, on her initial recording voyage.
Otis was neatly attired in a short sleeve plaid shirt covered by a multi-colored sweater, dark blue slacks, nylon stretch socks and high leather sporting boots. He was prepared and raring to go. ABC exec. BOB THIELE was presiding over the A&R duties. The engineers were scurrying about placing mikes, laying wires, taking tone and balance tests and setting the dials. In the audience were "Jazz" senior editor, Pauline Rivalli; "Jazz" blues editor and historian, Sheldon Harris who was to be the liner notes annotator for the album; photographer, Dennis Chalkin who was busily snapping everything that moved; Muddy's personal manager, Bob Messinger; great Spann-Muddy fans, the Malenky's and Bluesdom's Victoria Spivey, a one lady cheering section, who was spurring on her 'son' to greater heights. Album is scheduled for February 1968 release.
(illustrated with photo of Spann, Lucille, Len Kundstadt, Spivey and Muddy)