1. Gather the info you already know. Include the names of students, the specific years you are researching, what you know about international affairs at that time, the name of the country at that time, etc..
2. Start with a general search of digitalcommons.calpoly.edu. This will search across several collections, including the student newspaper, Academic Senate, and the Cal Poly Report.
6. Schedule an appointment with the archives staff to see if there are any other collections that would be of interest to you and brainstorm further research ideas. email@example.com or 805-756-2305.