CoOL -- Conservation OnLine: Resources for Conservation Professionals
http://palimpsest.stanford.edu/
"CoOL, a project of the Preservation Department of Stanford University Libraries, is a full text library of conservation information, covering a wide spectrum of topics of interest to those involved with the conservation of library, archives and museum materials"--[from CoOL web site].

The E. Lingle Craig Preservation Laboratory Repair and Enclosure Treatment Manual
http://www.indiana.edu/~libpres/manual/manintro.html
From the Indiana University Libraries at Bloomington. Gives step-by-step, illustrated instructions on a wide variety of repair and preservation activities.

Library Preservation at Harvard: Caring for Personal Collections
http://preserve.harvard.edu/bibliographies/personalcollections.html
Links to several other repair and conservation sites, including the Library of Congress and the National Archives. Covers preservation of books, photos, audio, and video materials.