Abstract
The Hans Reichenbach Collection is part of the Archives of Twentieth Century Philosophy of Science, which also houses the Rudolf Carnap and Frank Ramsey Collections. The Archives of Twentieth Century Philosophy of Science is located in the Special Collections Department of the University of Pittsburgh's Hillman Library. In the past few years work on the recently acquired Hans Reichenbach Collection has resulted in a useful research source. Although the collection contains many notes, manuscripts, and recordings, efforts at organizing the collection have centered on the wealth of correspondence contained in the collection. A great deal of this organizational work has now been completed, and this part of the collection is open to study by interested scholars.