Not knowing the contents of your exhibit, I'm going to brashly make suggestions that probably won't make sense in the context of your project. It seems like there's more effective ways to keep the exhibit current. Let's start with the most expensive: Can you afford a staff person or a well-trained volunteer to circulate in the exhibit? What about a computer (maybe not connected, but with the web pages loaded into memory)? What about a handout with current information? Do you have a library available to visitors? Sharyn Horowitz, The Health Museum of Cleveland [log in to unmask] 8911 Euclid Avenue Cleveland, OH 44160 (216) 231-5010 fax 216-231-5129