Place Based research often involves a mix of primary, secondary, and tertiary sources.
Primary Sources are original documents that contain firsthand information. Interviews, documentaries, photographs, and government documents are common examples of primary source documents.
Secondary Sources are a degree removed from a firsthand account and usually contain analytical commentary. Common examples of secondary sources include: academic journal articles, newspaper articles, books, biographies.
Tertiary Sources summarize and condense information from primary and secondary sources and are typically used to get a general overview of a topic. Dictionaries and encyclopedias are the most common forms of tertiary sources.