(Low Cost or Free Sources of Information)
Newspaper Links
Wikipedia List of Online Newspaper Archives
Historical Documents
Library of Congress Digital Collections
National Archive & Records Adminstration-Access to Archival Databases
National Archive & Records Administration-Archival Research Catalog
Checklist: Places to Look for Documents on Archives.gov
Research Tools and Ways to Search Online
Historical Societies Directory (United States, Canada, Australia)
Public Libraries.com : State Libraries & Archives
Wisconsin Department of Public Instruction: State Library Web Sites
International Publications
AMICUS (Canadian Union Catalgue)
British Library Integrated Catalogue
COPAC (Academic & National Library Union Catalogue for UK and Ireland)
Libraries Australia (Union Catalog)