There are several ways to find primary sources in the Library catalog.
For example: "world war" and SU: sources.
More keywords identifying primary sources in Library of Congress Subject Headings
A digital library of images in the areas of art, architecture, the humanities, and social sciences with a set of tools to view, present, and manage images. Integrated with JSTOR, which includes access to scholarly journals in the arts and sciences.
Provides online access to western classical music , world music, and jazz recordings.