Depending on your topic, you can find source material on the Internet, often in digital collections from libraries, archives, museums, and government organizations. The trick is how to find them. Google is an option, but you might also consider trying directories and catalogs that specialize in scholarly resources. We recommend the following:
For many topics, the source base will still exist only in analog formats (print or microfilm).
Below are a few examples of the kind of material you can find online.