Some cover topics in the natural sciences, mathematics, and philosophy, while others discuss social issues or popularize of relativity theory and quantum mechanics for radio programs. Worth mentioning, too, is the presence in the collection of several unpublished manuscripts as well as working drafts and page proofs for many of Reichenbach's publications. Reichenbach's library, not yet transferred to Pittsburgh, consists of over 1,000 volumes. Most pertain to his philosophical work, and many contain marginalia by Reichenbach. Like the Carnap Collection, the papers of Hans Reichenbach are indexed principally by a proper name inventory.
Some subject access is provided by a brief file folder index.
The original order of the collection has been maintained so far as possible. Materials are in German or English, and only a few items are in shorthand. A very small amount of material has been sequestered, to be opened at a later date to researchers.