This collection primarily contains architectural drawings, photographs, business records and reference materials related to the projects and designs of architectural and engineering firm Abbott, Merkt and Company. A subsidiary portion of the collection includes drawings, photographs and papers related to the life and career of Richard H. Tatlow, III, president of Abbott Merkt, as well as the firms and agencies for which he also worked.

This large collection documents in great detail the architectural projects of Abraham Geller and his colleagues throughout the United States and abroad, spanning the 1940s through the 1990s. Types of projects represented include retirement homes, recreational facilities, medical centers, private residences and prototype dwellings for large residential developments, urban renewal projects, and offices.

Paul Nelson was an American architect educated at the Ecole des Beaux-Arts in Paris and practicing in France and the United States. This collection contains materials related to Nelson's personal, professional, and academic lives, the bulk originating during his residency in the France, beginning in the 1920s.

This collection contains materials related to Chermayeff's personal, professional, and academic lives, the bulk originating during his residency in the United States, beginning in the late 1930s. Project records document the full range of his work, including many records from his British period. The collection also contains extensive correspondence with personal friends, clients, and professional and academic colleagues.