A promotional map of downtown Chicago. Famous buildings are shown in profile, including hotels, churches, theatres, and newspaper offices. The small inset diagram in the lower right corner shows the “Motor Coach Routes” in the Loop, the nickname given to the transport system ring in the city. The diagram is then reproduced on the map itself, with each route shown as a differently coloured line of dashes with small drawings of coaches.

George Clason had started his original map company in Denver, after fighting in the Spanish-American War. His success in Denver led to the opening of a second branch in Chicago, to take advantage of both the developing publishing and railway industries. Clason also published the first road atlas of the United States and Canada, and a get-rich-quick manual called ‘The Richest Man in Babylon’, which is still popular today.