Photo credits:
1. Collection of Mary Ann Johnson.
2. George Eastman House, GEH 3714. Photo by Lewis W. Hine.
3. Nationalities Map No. 1, Polk Street to Twelfth, Halsted Street to Jefferson, Chicago. Hull-House Maps and Papers, A Presentation of Nationalities and Wages in a Congested District of Chicago, together with comments and essays on problems growing out of the social conditions. (New York: Thomas Y. Crowell & Co. 1895).