Red text on a white background.
Feeling inspired to clean up? This slogan was one of three selected for use in the 1964 Chicago clean up campaign led by Mayor Richard Daley’s citizen committee. The weekly Our Town column in the Chicago Tribune asked its readers for safety and cleanup slogans, and Richard Egan’s entry was made into buttons and signs posted on footbridges on Outer Drive, Chicago.
Chicago Tribune. (1964). Citizen's Hear City's Call in Cleanup, Safety Slogans, p. 158. Retrieved 9 July 2021, from https://www.newspapers.com/image/196780775/?terms=%22don%27t%20yelp%20he....