Here's a list of the Roulette albums. Most of them haven't been released on CD, but you can still find them in used record stores and similar venues:

1958
A Message from Newport
Swingin' My Way Through College

1959
Plays Jazz for Dancing
A Message from Birdland

1960
Let's Face the Music and Dance
Newport Suite

1961
Maynard '61
Straightaway Jazz Themes
Two's Company (with Chris Connor)

1962
Maynard '62
Si Si MF

1963
Maynard '63
Message from Maynard

1964
Maynard '64