I'm glad you included "Jim Bowie, Apache". That was apparently the first episode to use a traditional instrumental underscore (courtesy Capitol's Hi-Q Library) rather than vocals by Ken Darby and his quartet...which gave the show even more action and appeal.
Question; Bowie is pronounced Boo-ey in the Opening titles. They sing ‘Jim Boo-ey Jim Boo-ey’. This annoys the sh1t out of me, yet people in the episodes call/pronounced his name as Bowie.