During the 1920s, the Chicago Rapid Transit Company commissioned the city's finest graphic artists to produce advertising posters that encouraged Chicagoans to use rapid transit for more than commuting to work. The images produced beckoned Chicagoans to the city's parks, museums and other urban spots, as well as to more bucolic destinations beyond the city limits. Curiously, almost none of the posters actually featured the "L"TM itself, only scenic views of the destinations. Although there seem to be no records of precisely how many posters were produced, what they advertised, and what images they consisted of, researchers think approximately 160 posters were produced for the Insull lines between 1921 and 1929. - chicago-l.org

Please jump over to chicago-l.org to view the full collection. Thanks to Sam Rosen for the suggestion.

Inspiration

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Source: chicago-l.org