http://Archivopedia.com ...focuses on the management and research of primary source materials....

The wiki encyclopedia is open for anyone to edit and contains information relevant to archivists, librarians, public historians, and museum professionals [such as news headlines, job ads, grant notices, teaching modules, and a terminology guide]....

In addition to the wiki, the site offers a search engine specially customized to find primary source materials around the world by keyword. This feature takes advantage of open source / open access initiatives and is designed to promote repository collections containing original materials by enabling researchers the opportunity to find and link to collections and specific items held at various repositories that might interest them in a single search.

Source: http://libsite.org/node/169