UD’s institutional repository contains text based, audio, and video collections such as digitized books, letters, manuscripts, yearbooks, newspapers, oral histories and government material.

Finding aids are guides for the manuscript collections in the Special Collections Department, providing contextual information and detailed contents lists. If these materials have been imaged for the digital collections, they include links back to the digital objects. It is possible to filter search results for collections with digital content.

The Online Exhibitions website provides text and images for current, former, and online-only exhibitions. The exhibitions may include content from the digital collections, but many of the images only appear on the exhibitions site.