The best way to get help finding sources for an involved research project like a senior seminar paper is to work directly with a librarian. You can set up a one-on-one consultation with a librarian by going to our Research Help page, or click on the link here - https://libcal.depauw.edu/appointments.
You'll have the opportunity to pick a librarian of your choice, or look at all the available times for all librarians. Any of us are happy to work with you! You'll be able to choose to have the meeting in-person or via Zoom.