You can help MESS:
http://rbelmont.mameworld.info/?p=689
"If you have a classic Mac, there are some things we need dumped to complete some aspects of the emulation. Fortunately, Paul Pratt of The Gryphel Project and Mini vMac has written several user-friendly apps that do this dumping for you."
Click through for all the details.
MESS: Help Wanted from classic Mac collectors
Moderators: Cat_7, Ronald P. Regensburg