Paper-Based Art and Artifacts and their Preservation
National Park Service Conserve-O-Grams
Library of Congress advice on Preserving Newspapers and Preserving Works on Paper: Manuscripts, Drawings, Prints, Posters, Maps and Documents
How to store newspaper clippings from the British Library
The Henry Ford Museum Benson Ford Research Center Care and Preservation of Documents and Works of Art on Paper
The National Archives At-A-Glance-Guide to Document Handling and Holdings Maintenance
The International Association of Paper Historians (IPH) integrates professionals within the field of paper history.
Mass Deacidification - information on this topic can be found at this link from the Conservation OnLine (CoOL) site.