A primary source is a piece of information by a witness, participant, or contemporary of an event, experiment, or time period under study.
The University Library maintains a Primary Source webpage with information about finding and using primary sources.
What is a Secondary Source?
A secondary source interprets and analyzes primary sources. These sources are one or more steps removed from the event. Secondary sources may have pictures, quotes, or graphics of primary sources in them.
Examples of secondary sources include:
A journal/magazine article which interprets or reviews previous findings
A book about the effects of WWI