Historical Primary Source
In the field of history, a primary source is an original document that gives historical evidence and, typically, was created at the time being studied, by someone with first-hand knowledge.
Examples
Scientific Primary Source
In science, a primary source is an original report of an experiment or observation by the researcher.
Examples
Duke Library Catalog
Rubenstein Library
Primary Source Databases
Newspapers
Numerical & Geospatial Data
Government Documents