I was the Collections Manager for Old Cowtown Museum in Wichita, Kansas, until the end of November, 2003. Old Cowtown Museum has a similar situation -- 27 historic (1870s, 80s & 90s) structures over a 23-acre site -- all of which require maintenance and upkeep while applying the Secretary of the Interior's Standards when dealing with historic structures. Old Cowtown has considered many of the options you bring up. It may be worth a call to the museum's Executive Director, Jan McKay, to discuss some of these issues. ========================================================= 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).