British Architectural Library

Descriptions and online catalogue of the collections including over 500,000 architectural drawings by mainly British architects, over 700,000 manuscripts and archives and more than 650,000 photographs of architecture worldwide. Contact details, opening ho
http://www.architecture.com/go/Architecture/Reference/Library_898.html

Canadian Centre for Architecture

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.
http://cca.qc.ca/

Gottscho-Schleisner Collection

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.
http://lcweb2.loc.gov/ammem/gschtml/gotthome.html

Architecture of Wales

Collection of architectural drawings, mostly of Welsh structures, held at The National Library of Wales.
http://www.llgc.org.uk/ardd/pensaeri/architect.htm

Architectural Archives of the University of Pennsylvania

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.
http://www.upenn.edu/gsfa/archives/

Irish Architectural Archive

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.
http://www.iol.ie/bizpark/i/iaa1/

Carnegie Mellon Architecture Archives

Aims to document the architects and architecture of Pittsburgh and the tri-state region of western Pennsylvania, eastern Ohio and northern West Virginia.
http://www.library.cmu.edu/Libraries/ArchArch/

Norman Morrison Isham Collection

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.
http://home.sprynet.com/~awb02/ham1.htm

Research Materials for Architecture in Metropolitan Washington

This directory by the University of Maryland Libraries describes collections of architectural drawings, photographs and papers in various archives, libraries and other repositories.
http://www.lib.umd.edu/Guests/DCARCHres/

The Southeastern Architectural Archive

This archive at Tulane University is New Orleans' major repository for architectural records. Has cataloged records of more than 120 firms. Opening hours, architects represented, resources.
http://www.tulane.edu/~lmiller/SEAAHome.html

The Parkinson Architectural Archives

Privately-held collection featuring the work of English-born US architect John Parkinson and the successor firms in Los Angeles and Austin (1889-current.) Online queries.
http://www.parkives.com

Avery Library Drawings and Archives

A collection of 500,000 items, including original drawings, blueprints, photographs, correspondence, and other architectural records at Columbia University, New York.
http://www.columbia.edu/cu/libraries/indiv/avery/

Lambeth Palace Library

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.
http://www.lambethpalacelibrary.org/

Environmental Design Archives

A repository of historical architecture and landscape architecture records at the College of Environmental Design, University of California. Collections, programs and services.
http://www.ced.berkeley.edu/cedarchives/

The National Monuments Record

The records made and gathered by the Royal Commission on the Historical Monuments of England. Access and search aids for the public; online photo gallery.
http://www.english-heritage.org.uk/default.asp?WCI=WebItem&WCE=2131

The International Archive of Women in Architecture

At Virginia Polytechnic Institute and State University documents the history of women's professional involvement in the field of architecture before the 1950s. Biographical dictionary.
http://spec.lib.vt.edu/IAWA/

Arizona State University Architecture and Environmental Design Archives

Houses archival drawings of nine designers, as well as papers for Litchfield Park and a Solar Energy Collection, in Tempe, Arizona.
http://www.asu.edu/lib/arch/libarchives/scindex.html

Ball State University

The College of Architecture and Planning’s Drawings and Documents Archive preserves and makes available records concerning Indiana’s historic sites and structures and the careers of Hoosier designers.
http://www.bsu.edu/cap/facilities/archives/

Barragan Foundation

This foundation in Switzerland houses the professional archives of Luis Barragán.
http://www.barragan-foundation.org/