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.