Pullman-Standard 4000-Series
A Chicago Rapid Transit Company 4000-series rapid transit car, number 4[?]71, at an elevated station in 1949, with an 'EXPRESS HOWARD SKOKIE' destination sign.
A CTA 4000-series electric multiple-unit car, number 23, in Skokie Swift livery, stands at the Howard Street station platform on a snowy day in the 1960s.