Wyncote being a sub label of Cameo Records, there is all reason to believe that this release is a compilation of tracks recorded earlier on 2 releases under the Cameo label:
C-1046/SC-1046 - The New Sounds of Maynard Ferguson - Maynard Ferguson Take The "A" Train (S)/Bossa Nova De Funk (S)/Gravy Waltz (S)/Cherokee (Indian Love Song) (S)/I'm Getting Sentimental Over You (S)//One O'Clock Jump (S)/At the Sound Of The Trumpet (S)/Maine Bone (S)/Watermelon Man (S)/Danny Boy (S)
https://www.discogs.com/fr/Maynard-Ferguson-The-New-Sounds-Of-Maynard-Ferguson-And-His-Orchestra/master/324767
C-1066/SC-1066 - Come Blow Your Horn - Maynard Ferguson Groove/Country Boy/Blues For a 4-String Guitar/Whisper Not/We've Got a World That Swings/Chicago That Toddling Town/Naked City Theme/New Hope/Anthony and Cleopatra Theme
(information taken from the very reliable Both Sides now discography website)