Tip: Think of JSTOR in this type of search if you are looking for articles written around the turn of the century, as these can be primary sources. For example: an article from a medical journal in the early 1900s that talks about hysteria or mental illness.
Searching TIP: Many primary sources can be found within the bibliographies and notes in secondary sources.
If you are unsure about a source, check with your Professor Bergren or myself to determine whether it can be considered primary or secondary.