Gilbert, Douglas R., “Painted Brick Sign in Chicago, Illinois,” Digital Collections, accessed December 18, 2025, https://digitalcollections.library.gvsu.edu/document/55273.
Black and white photograph of a promotional sign for the city of Chicago painted on the side of a brick wall in Chicago, Illinois. In the photograph, the sign reads, "Chicago, 'The Friendliest City in the World,' Richard J. Daley, Mayor." Scanned from the negative.