The Research Library
Collecting and preserving Delaware materials for over 150 years, the Delaware Historical Society has a rich and varied collection of books, ephemera, newspapers, serials, maps, manuscripts and photographs relating to the history of Delaware and its people.
Visitors can access library and archival materials at the Research Library.
Open by appointment only
Monday–Tuesday and Thursday–Friday
| 9 a.m.–1 p.m.
Every third Saturday of the month, excluding December
| 10 a.m.–4 p.m.
Closed major holidays
Check our calendar for Saturday research days and events that may affect regular hours.
Anyone can use the library free of charge, but fees apply for photocopying, use of cellphones or digital cameras, and other imaging services. For detailed information on fees and additional research services, please visit our Research page.
Visitors can also do on-site research using our extensive object collection, located separately in the Delaware History Museum. Please contact our Curator of Objects, Jennifer Potts, by email or phone (302) 295-2389 to arrange a research visit.