ビッグ・プルマン (シカゴ・サーフェス・ライン)
John J. Brown; Charles A. Brown; James E. Coleman; Robert E. Johnson (1941-7). Complete Roster of Equipment of the CHICAGO SURFACE LINES. Bulletin. 27. Central Electric Railfans' Assosiation. https://cera-chicago.org/Resources/Documents/Bulletin%2027.pdf 2020年8月9日閲覧。.
Chicago Transit Authority (2017). cta 2017 Historic Calender. https://www.transitchicago.com/assets/1/6/16JD_094_2017_Calendar_web.pdf 2020年8月9日閲覧。