Well, the city was growing and a common address system was needed, to get mail, police, fire, etc.
Robey was renamed Damen, as Crawford to Pulaski to honor of someone. However nowadays, this would never fly, city streets almost never change names. Lawsuits and costs, etc. So, we get the brown 'Honorary' street signs. But, they do confuse tourits!
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Forgotten Chicago Sightings