A gallery of signs found in Chicago alleys.

The smaller sign is one of my favorites. Little rats shadowing clueless dogowners.
The ubiquitous rolling trash bin
Spotted in Frankenstein's Alley
Have you checked your bus for SLEEPING CHILDREN?
Alley poem:

"Recycle aluminum cans / Anyone may put them in / Anyone may take them out."

A totem pole stack of grimy signs.
Al's favorite
The international iconograph of loitering?