Primary sources are documents or artifacts created at the time under study. Secondary sources might analyze or summarize historical events, but primary sources record history as it happens. There is no single, systematic way to locate primary sources, and you might have to get creative to find what you need. Depending on the period of time you are studying, a good primary source might be a newspaper or magazine article about a historical event, a diary or letter written by a historical figure, or a piece of media such as a painting or cartoon.