One of the best ways to find information on individual architects or firms is to look in the Library Catalog using the name as a subject or keyword. For prominent architects and firms, there may be several books detailing the projects over several years or there may be books on one specific building.
Here are some recent examples in the collection:
ArchInform database includes information over more than 55000 built and unrealized projects (mostly 20th century) from various architects and planners; search by architect, town or keyword; information provided includes name, address, keywords and bibliography, may also include images, comments, links to other Websites or internal links.
Architect Finder, From the American Institute of Architects (AIA), this is a searchable database for finding member firms.
Architects USA, Directory of over 20,000 architectural firms in the United States. Information comes from the architects or from Yellow Pages.
US Architecture Firms, Part of the Almanac of Architecture & Design published by Design Intelligence, searchable database to entries that include name of firm, ranking, address, website link, principles, revenues, types of services, and more.
Conversations with Students. A series of books with 11 volumes issued between 2010-12 by Princeton Architectural Press. KU owns all the volumes, usually in both a paper and an e-book format. To find them, search the Library Catalog using "conversations with students" as a phrase.