APIS: Advanced Papyrological Information System
APIS is a component of the larger Papyrological Navigator database, a worldwide aggregation of digital images, metadata, translations and transcriptions of papyri and ostraca (clay tablets). A listing of Columbia's ca. 5,800 papyri and ostraca can be viewed here
Columbia Historical Corporate Reports: Digitized Reports from Watson Library's Collection
Selected from the collections of Columbia's Watson Library of Business & Economics, this collection presents ca. 770 digitized reports issued between 1850-1960 by some 36 companies, including department stores, utilities, banks, and railroads.
New York Real Estate Brochure Collection
A searchable database of thousands of advertising brochures, floor plans, price lists, and more from residential and commercial real estate development in New York City and vicinities from the 1920s to the 1970s.
Greene & Greene Architectural Records and Papers Collection
An online collection guide and image database of architectural designs and drawings by Charles Sumner Greene and Henry Mather Greene, architects of the American Arts and Crafts Movement.
Seymour B. Durst Old York Library
The Seymour B. Durst Old York Library collection at the Avery Architectural & Fine Arts Library consists of more than 40,000 objects including historic photographs, maps, pamphlets, postcards, books, and New York City memorabilia from the 18th century to the 1980s.
Real Estate Record and Builders Guide
Digitized volumes of The Real Estate Record and Builders Guide, a magazine detailing building activity in New York City and its environs that began publication in the late 1860s. The project website provides sales, mortgage, conveyance, and other data as well as illustrated articles on buildings and neighborhood development.