Primary Source
A primary source is an original object or document - the raw material or
first-hand information, source material that is closest to what is being studied.
Primary sources vary by discipline and can include:
Primary sources are materials that contain firsthand evidence of events, usually recorded by someone who participated in, witnessed, or lived through the event.
The following are commonly considered primary sources:
Secondary sources are works that are not original primary sources, but documents which offer an analysis, interpretation, or evaluation of information gathered from primary sources. For example, books critiquing Shakespeare's plays or a product review are secondary sources.
The following are commonly considered secondary sources: