Below are a few of the books in the WU collection that contain primary sources. There are never as many as we would like. So, use your required readings to identify primary sources -- and carefully read the footnotes and bibliographies of your class readings to locate them.
Under these terms used by catalogers to bring like materials together, you will find additional books containing primary source materials.
Examine the subject headings/descriptors at the bottom of WU Catalog records or any record you bring up in your research. Click on interesting ones.