If the new “Wicked” movie makes you wish you could be whisked off to the Emerald City, you might want to visit Chicago’s Driehaus Museum. Their latest exhibit showcases rare items from the 1939 musical “Wizard of Oz,” replica costumes, and gives visitors an inside look at how L. Frank Baum’s beloved classic was adapted from book to screen. We talk with the museum’s executive director Lisa Key about what else visitors looking for an Ozian fix can expect. For a full archive of In the Loop interviews, head over to wbez.org/intheloop.