What is a trunk show?

OK dear readers- a question for you. I have been asked to present a trunk show at the Schweinfurth Art Center during Quilts=Art=Quilts. And I agreed. Here is the problem. Not only have I never given a trunk show, but I have never been to one. Any suggestions on what you like or dislike in trunk shows? What aspects of my art would you be most interested in learning about? How many actual quilts should I bring and how many can I just show in slides. Any help would be so appreciated.
by JudyK