Useful information for preserving personal collections, including "How to Care for Your Treasures" and "Find a Conservator." The site also provides information on working with a conservator and the code of ethics for professional conservators.
The Harvard Library's summary of preservation and conservation activities, including care and handling, emergency preparedness, exhibit advice, and more.
CoOL is intended for professionals looking for conservation research. It mostly contains technical articles intended for professionals, but can have some useful introductory information as well.
NARA's site includes information specific to activities at the National Archives, but it also has resources for at-home collections care and basic library and archives preservation.
(PADG) is for preservation administrators; it is used for questions about emerging preservation methods, job announcements, preservation education opportunities, etc.
The Conservation DistList sometimes receives preservation and collections care questions, but it is more focused on conservation treatment. Conservation education opportunities and job and internship openings are frequently posted to the distlist.