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Contains the works of more than 400 designers from the 18th century to today, most notably the office drawings, models and papers of Louis I. Kahn, located in Philadelphia.

Collection of architectural drawings, mostly of Welsh structures, held at The National Library of Wales.

A collection of 500,000 items, including original drawings, blueprints, photographs, correspondence, and other architectural records at Columbia University, New York.

The College of Architecture and Plannings Drawings and Documents Archive preserves and makes available records concerning Indianas historic sites and structures and the careers of Hoosier designers.

This foundation in Switzerland houses the professional archives of Luis Barragán.

A museum and study centre devoted to international architecture past and present. The collection includes 42,000 prints and drawings from the late 15th century to the present and 50,000 architectural photographs. French and English language options.

Aims to document the architects and architecture of Pittsburgh and the tri-state region of western Pennsylvania, eastern Ohio and northern West Virginia.

A repository of historical architecture and landscape architecture records at the College of Environmental Design, University of California. Collections, programs and services.

Photographs by Samuel Gottscho and William Schleisner in the Library of Congress of the architecture and interior design of 20th-century America. Can be browsed or searched.

The archive was established in 1976 to collect, preserve and make available to the public records of every kind relating to the architecture of Ireland.

Includes the archive of the Incorporated Church Building Society (1818-1984), the single largest source of plans and drawings of new and rebuilt churches in the UK. Library holdings, services, news.

Collection of notebooks, manuscripts, photographs,letters, deeds, inventories and measured drawings pertaining to Isham's study of early New England architecture, held by the Rhode Island Historical Society.

This directory by the University of Maryland Libraries describes collections of architectural drawings, photographs and papers in various archives, libraries and other repositories.

Descriptions and online catalogue of the collections including over 650,000 architectural drawings by mainly British architects, over 700,000 manuscripts and archives and more than 650,000 photographs of architecture worldwide.

Collates images, videos and commentary on Britain's most celebrated post war architect. The archive was presented to the Royal Commission on the Ancient and Historical Monuments of Scotland by the Spence family.