- Primary sources are produced during the time of an event, although they can be written after the fact, in the form of memoirs. They demonstrate personal experiences that encompass a historical event, movement or era.
- Primary sources are often written by contemporary players of the era being researched. Most experiences are first-hand accounts but are seen through the lens of the individual or institution.
- Primary sources are regarded as trusted, where secondary sources are dependent on knowing whether the author is a trustworthy and respected researcher.