Have you ever wondered what the difference between a primary and secondary source was, or what types of resources qualify as a primary source?
If you have, Princeton University has created a concise explanation of the two types of resources on this page:Primary vs Secondary Sources.
Here are a few great primary resource sites:
American Memory Project (U.S. History Collection): http://memory.loc.gov
Maine Memory Project (Maine History Collection): http://mainememory.net
Windows on Maine (Online Video Collection): http://windowsonmaine.library.umaine.edu/
Europeana (European Culture & Science): http://www.europeana.eu/portal/
Chronicling America (Historic Newspapers): http://chroniclingamerica.loc.gov/