In case anyone hasn't seen, all the 'other' Charlie Brown specials records have been being released, sometimes for the first time, over the past year or two. Some are pretty good. They're out on vinyl or available to stream. 

Buddy Montgomery – Ties  

Albert Warner's Brown Buddies/Albert Jiles' Onzaga Owls (American Music)

Milton Nascimento with Wagner Tiso, Ao Vivo at RTSI 1981