American Institute for Conservation of Historic and Artistic Works

Canadian Conservation Institute (CCI)
CCI Notes addressing Textiles and Fibers (PDFs are available):

The Henry Ford, Benson Ford Research Center
The Care and Preservation of Antique Textiles and Costumes  a Preservation Fact Sheet by Mary M. Fahey, Chief Conservator at The Henry Ford

Institute of Museum and Library Services (IMLS)
Connecting to Collections on-line resources for textiles

Minnesota Historical Society

Conservation and Preservation of Heirloom Textiles (video in 6 parts, from YouTube):

Museum Textiles Services

National Park Service (NPS)
Conserve O Grams:

NPS Museum Handbook, Part I - Museum Collections:

Nebraska Educational Telecommunications (NET), Nebraska's PBS and NPR Stations

Smithsonian, Museum Conservation Institute
The Smithsonian's resource links to help care for your textiles:

Texas A&M University, Center for Maritime Archaeology and Conservation, Conservation Research Laboratory
The Laboratory's on-line manual for conserving archaeological artifacts recovered from marine environments, discusses methods applicable to natural plant and animal fibers (e.g., wool, hair, silk, cotton, flax, jute, hemp, nettle, grass).

The Textile Museum, Washington, D.C.