Handwriting and other details have been reported based on the notes of David Berger, Andrew Homzy, Dr. Theodore Hudson, Walter van de Leur, and Dr. Mark Tucker.
There appear to be numbers from the Duke Ellington Band Book: 5, 23.
7 parts and 1 score
Caucus race is contained in 1 folder consisting of 1 one page conductor score and 6 parts in Db Major concert, and 1 part in an unknown key -- in ink and pencil -- in unidentified hand (Whaley?).
Conductor score does not indicate parts. Parts in Db Major concert for 1 reed - alto; 1 trumpet - 2; trombone; bass; drums; piano. Part in unknown key for unidentified treble instrument. -- from the Duke Ellington Library.