Think of a primary source document as a source that has seen the action it is interpreting. for example, a journal entry by Christopher Columbus about the Americas would be considered a primary source document. however, a text book that covers Columbus’ journey written 10 years later wouldn’t be a primary source. examples of primary sources are -journal entries -photographs -letters -artifacts such as hieroglyphs -pieces of art
if something is written “about something” like a text book or if it is a replica of something that is not the real thing, that would be a secondary source.