The USC Libraries catalog, HOMER, lists book-length published biographies. Search HOMER by architect's name. Journal articles, such as those indexed in the Avery Index to Architectural Periodicals, Proquest newspapers, or JSTOR, also include obituaries and biographical sources. Below are a few examples of reference works that are biographical in nature.
1000 Architects. 2 vols. Mulgrave, Victoria: Images Pub. Group, 2004- AFA Reference, call number NA50.O64
African-American Architects: A Biographical Dictionary, 1865-1945. Edited by Dreck Spurlock Wilson. New York: Routledge, 2004. AFA Reference, call number NA736.A47 2004.
Brodie, Antonia. Directory of British architects 1834-1914. 2 vols. London: Continuum, 2001. AFA Reference, call number NA967.D5724 2001.
Colvin, Howard. A Biographical Dictionary of British Architects, 1600-1840. 3rd ed. New Haven: Yale University Press, 1995. AFA Reference, call number NA996.C6 1995