- Harold Q. Seitz Collection
- Wilmington Community and Civic Organizations Collection
- Wilmington Area Streets and Neighborhoods Photographic Collection
- Historic Wilmington Cemetery Collection
- Wilmington Area Places of Worship Collection
- Drum Barracks Civil War Museum Collection
- Scheibe Family Collection
- Dr. John Russell Nerad Collection
- Frederick William Morris Collection
- Mc Guire and Frost Families Collection
- Woods Mortuary and Ambulance Service Appointment Books
- Doralee Uruburu, Junior Women's Club of Wilmington Collection
- Women's Club of Wilmington Collection
- Native Daughters of the Golden West, Parlor 278 Collection
- Leon Hewitt Callaway, Jr. Photographic Collection
- Captain Black Family Collection
- Wilmington Subject Files - Community and Culture Collection
- People of Wilmington Collection
- Wilmington Subject Files: Historical Events, Wilmington Leadership, and Environmental Projects
- Sports of Wilmington
- Museums and Libraries of Wilmington 1960-2000
- Railroads and Red Car/Trolley Transit of Wilmington
- Wilmington Port History
- World Wars and Veteran History in Wilmington, CA
- Alex N. Albright, Wilmington Lions Club President's Book
- Dorothie M. Murello, Wilmington Democratic Club Collection
- The Church of Jesus Christ of Latter-Day-Saints, Wilmington Ward, Primary History Scrapbook
- Carlos "Charlie" Rico, Lions Club of Wilmington Collection
- Hugh H. Martin Collection
- Banning Family and Residence Museum Collection
- Wilmington Area Biographical Files