bass, guitar, vocals Peter Cetera
design [album] John Berg
design [flag sewn by] Natalie Williams
drums, timbales Daniel Seraphine
engineer Don Puluse
engineer Ty Mitchel
guitar, vocals Terry Kath
keyboards, vocals Robert Lamm
photography by Columbia Records Photo Studio
photography by Sandy Speiser
photography by [photo (poster)] Horn/Griner
producer James William Guercio
recorded by [recordist] Lou Waxman
recorded by [recordist] Willie Greer
trombone James Pankow
trumpet Lee Loughnane
typography [lettering] Annette Kawecki
typography [lettering] Loseidon Productions
typography [lettering] Melanie Marder Parks
woodwind Walter Parazaider