Directory of Reference Search Engines

a priori - History Search
Searchable directory of internet history resources.
Locate tutorials for a great number of different subjects.
Help-Site Computer Manuals
A computer related documentation search engine.
Information Please
On-Line Dictionary, Internet Encyclopedia & Almanac Reference
The Great War Search Engine
A search engine solels for websites with content which to the history of World War One (1914-1918)
WWW for Social Workers
WWWRSW currently contains 55,000 links. The focus of the database continues to be on the “grey literature” - full text scientific, technical and policy reports.