Dear Nancy - You didn't mention whether you have any air conditioning in your building, nor where the building is. If it's in a part of the world where you are likely to have hot humid conditions outside, you will want to keep your RH below 60%; an additional way to help keep mold from growing further on your collections is to keep the air moving. A dehumidifier will lower the humidity, but in such a small sealed space it will also raise the temperature, so fans would help keep the place bearable for you as well. Ideally, you might find out if another local institution has dataloggers (or an old, unused hygrothermograph) you could borrow to measure your conditions once you've installed your grant-funded dehumidifier and fans. If you lower your humidity too fast or too much, that can also damage your collection. I'm sure you'll get lots of other advice, too - I hope this helps. Anne Anne T. Lane, Collections Manager Charlotte Museum of History 3500 Shamrock Drive Charlotte NC 28215 704-568-1774, ext 110 [log in to unmask] ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).