Art Direction [Reissue Art Direction]: Maria Villar

Art Direction, Painting: Gary Meyer

Artwork [Cover Envisioned By]: Tony Lane (2)

Bass, Vocals: Peter Cetera

Design [Reissue Design]: Valerie Valera

Drums: Daniel Seraphine

Engineer: Jim Boyer

Engineer [Assistant]: Bradshaw Leigh

Engineer [Assistant]: John Beverly Jones

Engineer [Assistant]: Nick Blagona

Engineer [Assistant]: Peter Lewis (13)

Engineer [Assistant]: Robbie Whelan

Engineer [Assistant]: Roger Ginsley

Guitar, Vocals: Donnie Dacus

Keyboards, Vocals: Robert Lamm

Liner Notes: Craig Tomashoff

Liner Notes [対訳]: 目崎陽子

Liner Notes [解説]: Hideyo Itoh

Management [Reissue Product Manager]: Mike Engstrom

Mastered By [Reissue Remastering]: Dave Donnelly

Other [Assistants To Chicago]: Don Johnson

Other [Assistants To Chicago]: Ken Jones

Other [Producer Assistant]: Michele Slagter

Other [Reissue A&r / Project Supervision]: David McLees

Other [Reissue A&r / Project Supervision]: Gary Peterson

Other [Reissue A&r / Project Supervision]: Jeff Magid

Other [Reissue A&r / Project Supervision]: Lee Loughnane

Other [Reissue Project Assistance]: Bob O'Neill

Other [Reissue Project Assistance]: Steve Woolard

Other [Reissue Project Assistance]: Steven Chean

Other [Reissue Project Assistance]: Tim Scanlin

Percussion: Laudir de Oliveira

Photography By [Back Cover & Sleeve Influenced By]: Daniel Seraphine

Photography By [Back Cover & Sleeve]: Gary Heery

Producer: Chicago (2)

Producer: Phil Ramone

Supervised By [Reissue Editorial Supervision]: Cory Frye

Trombone: James Pankow

Woodwind: Walter Parazaider