The University Archives has a separate database from the Library Catalog.  If you have never conducted Archival Research, please read Using the University Archives for my Research Paper. Meanwhile, keep in mind:

• The archives changes over time.  Avoid frustrating searches by realizing this means archival organization changes over time as well. 
• Plan your search. Do you want to search by University department?  Do you have potential subject headings?  Have a tactic in mind.
• Try preliminary searches.  Be creative in your search.  Try different language derivations on your topic.
• Identify the location.  Make note of the building location of the files. Do you need to plan a trip to the Archives Research Center?
• When all else fails - ask an archivist!  We have excellent people who understand the archives' complexity and are willing to help.