Primary vs Secondary Sources

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):

Maine Memory Project (Maine History Collection):

Windows on Maine (Online Video Collection):

Europeana (European Culture & Science):

Chronicling America (Historic Newspapers):