2004: Target Corp. announced it was putting Chicago retailing icon Marshall Field’s up for sale. Field’s was sold to May ...

As Tribune photo editor Marianne Mather looked through the Tribune’s photo archive she realized that much of the city’s history has been intertwined with the Walgreens chain.

(Carl Hugare/Chicago Tribune) Here’s a look back at what happened in the Chicago area on March 7, according to the Tribune’s archives. Is an important event missing from this date? Email us.