There are so many types of primary resources it is important to define your parameters by

• Discipline (e.g. art, history, physics, political science)
• Format (e.g. book, manuscript, map, photograph)
• Type of information you need (e.g. numerical data, images, polls, government reports, letters)
• Date range

For other types of primary source materials check the guides in your subject area, or ask for assistance.