Bass – Doug Watkins (tracks: A1 to B2), Teddy Kotick (tracks: C1 to D4)
Drums – "Philly" Joe Jones (tracks: A1 to B2), Nick Stabulas (tracks: C1 to D4)
Engineer [Recording] – Rudy Van Gelder
Liner Notes – Nat Hentoff
Photography By [Cover] – Burt Goldblatt
Photography By [Inside] – Chuck Stewart
Piano – George Syran (tracks: C1 to D4), Tommy Flanagan (tracks: A1 to B2)
Producer [Original] – Bob Weinstock
Remastered By  – David Turner
Trumpet – Donald Byrd (tracks: A1 to B2), Kenny Dorham (tracks: A1 to B2)
Written-By – Phil Woods (tracks: A1, B1, B2, C2 to C4, D2 to D4)
Recorded at Van Gelder Studio; Hackensack, New Jersey - Side 1 & 2 : recorded June 15, 1956 - Side 3 & 4 : recorded March 29, 1957 Remastered ay Fantasy Studios in 1976; Berkeley, Ca.
℗1976 Prestige Records Made in France Distribution exclusive Musidisc-Europe
Side 1 and 2 originally issued as "Pairing Off" (Prestige 7046). Side 3, #1 and Side 4, #1 were originally part of "Bird Feathers" (New Jazz 8204), an anthology combining these selections with items by other alto players. The balance of Sides 3 and 4 were originally issued as "Phil and Quill" (Prestige 7115).