Chicago, IL: First Post Office

The web's caption:

In the Log Building in the Foreground, at What Today is the Intersection of Lake and South Water Streets, Chicago’s First Post-Office Was Established in 1831. From a Painting Owned by the Chicago Historical Society

Chicagology

It is hard to imagine how important the post office was before the invention of the telegraph and how important the newspaper was before the invention of the radio. An interesting tidbit from the web article quoted from M.H.Putney's "Historical Notes" is:

In 1831, the mail was carried on foot once a monthIn 1832, on horseback once a weekIn 1833, by wagon once a weekIn 1834, by stage semi-weeklyIn 1835 and 1836, by stage tri-weeklyIn 1837, by stage daily: and after that time at increasingly short intervals.