When thinking about what constitutes a primary source, here are some major types:
Books
Journals
Letters
Annals
Dissertations
Public records
Census data
Eyewitness accounts
Scripture
Inscriptions
Newspapers
Diaries
Chronicles
Government documents
Personal or institutional papers
Genealogies
Manuscripts
Laws
Scrolls
Period literature and poetry
From Using Internet Primary Sources to Teach Critical Thinking Skills in History Craver, Kathleen, D 16.2 .C79 1999, p.18