There are many organzations of professionals and many organizations dedicated to the professional development of those in the archival field.
Organizations of Archives Professionals
International Council on Archives (ICA)
The ICA Directory is available here.
Organizations of Preservationists and Conservators
Freedman's Bureau Preservation Project
(Prologue Summer 2002)
Reginald Washington's article on the preservation of post-Civil War era records documenting the federal government's assistance to newly freed slaves by the National Archives and Records Administration.
Preservation of Library and Archival Materials: A Manual. Now separated into leaflets by topic.
(Edited by Sherelyn Ogden, for the Northeast Document Conservation Center).
(Technical leaflets about conservation and preservation from the National Park Service.)