Primary Sources are materials that contain firsthand accounts of events and that created at the time of the events or later recalled by an eyewitness (note: these items don't have to look "old", they can be transcripts of original material). Examples Include:
Government, church and business records
Motion Pictures and videos
Maps and land records
Original Research (can be journal articles) and Data
What is a Secondary Source?
Secondary Sources describe, discuss, interpret, comment upon, analyze, evaluate, summarize, and process primary sources. Secondary source materials can be articles in newspapers or popular magazines, book or movie reviews, or articles found in scholarly journals that discuss or evaluate someone else's original research. Examples include:
Magazine and some journal articles (articles with original research data are primary)
What is a Tertiary Source?
Tertiary Sources contain information that has been compiled from primary and secondary sources. Examples include: