Primary sources are first hand observations of a time, person or event, or material culture associated with a time, person or event.
When examining a primary source, ask yourself the following questions:
Here's a document to test using these questions: Coffee-houses vindicated in answer to the late published character of a coffee-house
Available in Early English Books Online.
1. The Databases page has a Database Types drop down menu. Select "Primary Sources" to retrieve databases.
2. This search in Omni, the Library's catalogue targets records describing primary sources. Give it a try.
Here's an example using poverty AND laws