The Internet History Sourcebooks Project is a world wide web project designed to provide easy access to primary sources.
Avalon Project: Documents in Law, History and Diplomacy
A Primary Source is a document, record, or work created at the time of an event or by a person who directly experienced an event. A Primary Source contains original data and is from the time period being researched; it has not yet been filtered through interpretation.
Examples:
References:
University of Maryland Libaries. (2013). Primary, Secondary and Tertiary Sources. Retrieved from http://www.lib.umd.edu/ues/guides/primary-sources#primary
University of Victoria Libraries. (2013). Primary or Secondary Sources. Retrieved from http://www.uvic.ca/library/research/tips/primvsec/index.php
*The above references are in APA format.
A Secondary Source is an account written after the fact with the benefit of hindsight. A Secondary Source usually describes, interprets, summarizes, analyzes, evaluates, is derived from, or is based on Primary Source materials.
Examples:
References:
University of Maryland Libraries. (2013). Primary, Secondary and Tertiary Sources. Retrieved from http://www.lib.umd.edu/ues/guides/primary-sources#primary
University of Victoria Libraries. (2013). Primary or Secondary Sources. Retrieved from http://www.uvic.ca/library/research/tips/primvsec/index.php
Try a Google search using your topic plus one of the items on the primary source examples list e.g. Mahatma Gandhi letters or Moon landing interviews