Vintage computing spots in Chicago?

[John Herron]

I'll be in Chicago for a week soon for a work event. Limited time for
myself but I'll have some time Sunday to maybe Uber around. Any suggestions
or cool spots for a computer collector to hit?

I see a museum of broadcast communications is close to where I'll be  which
may be neat. Not sure if there are any used stores that might have vintage
computers but always willing to try.