This collection is comprised primarily of sound recordings, slides, and a transcript of a presentation given by Pickens detailing examples of architecture found on the Washington University campus. The material is arranged by material type.

Rudner’s papers, which reveal his passions for the philosophy of science and aesthetics as well as social consciousness, are comprised of four series housed in three boxes as detailed below.

This collection includes Salisbury’s research materials and writings, including his notes, draft copies.  It also includes personal material, articles about baseball, speeches, and other documents related to his scholarly work.

This collection contains articles written by and of interest to Holmes Smith as well as a scrapbook of photographs and drawings.  The material is arranged alphabetically by subject.

This collection includes correspondence between Herbert Spiegelberg and Frederick I. Kersten (1950s – 1980s), publications by and about Spiegelberg, material documenting phenomenological workshops, and photographs of Spiegelberg. The material is arranged alphabetically by subject.

This collection includes biographical information on Herbert Spiegelberg, correspondence, publications by Spiegelberg, research notes, and material documenting Phenomenological Workshops and Schweitzer Centennial events at Washington University. The material is arranged alphabetically by subject.

This collection is comprised of correspondence, research notes, drafts, class syllabi, and publications.

The collection consists of a number of bound volumes which describe Thias' life, teaching activities at Washington University, and architectural career. The collection also includes several folders of Thias' sketches and watercolors. These drawings depict buildings on the Washington University campus, St. Louis scenes, and Missouri scenes.

This collection contains some manuscripts and publications by R.G. Usher as well as newclippings, reviews, and correspondence relating to his writings.

The scrapbook documents the initial reception of his book A Critical Study of the Historical Method of Samuel Rawson Gardiner, 1915.  The material is arranged alphabetically by subject.