library - finding it

Barbara’s Bookstore in the Lower Level of Macy’s - 111. N. State St. (this is the address, but not the entrance you should use). 

Use the entrance into Macy’s that is at Wabash Ave. on Randolph St. Pass the visitor’s center and take a right towards to go down the escalator to LL (Lower Level). Take a right immediately into the Bookstore. You’re looking for a card catalog on a small table with three paintings of animals in top hats above it.