The Rare Book Collection contains volumes dating back to 1475 and is strong in philosophy, theology, labor history, literature, Northwest history, and Victorian poetry. The holdings are available on the online catalog.

Manuscript Collections

• Bing Crosby Collection, entertainer, crooner, and actor (UPDATED AND NEW INFORMATION)
  
• Gerard Manley Hopkins Collection, English Jesuit Poet
  
• Hanford Health Information Archive
  
• James O'Sullivan Papers, engineer involved with building the Grand Coulee Dam in Washington State

University Archives maintains the photographic, audio/visual, and historic paper records of Gonzaga University.

Jesuit Oregon Province Archives (JOPA) maintains the administrative records generated by the Society of Jesus primarily within its designated territory of Alaska, Washington, Oregon, Idaho, and Montana. This includes primary materials, as well as supplemental printed materials, such as books and maps.

• Other Repositories of Primary Sources, lists other Archives and Special Collections locations
  
• National Archives and Records Administration, lists NARA's resources