This is the Online version of the book published by Columbia University Press in 1957. The main purpose of this book is to study the idea of functionalism from a historical point of view. The research media are the literary sources of functionalism. The literature of functionalism consists largely of the writings ofrecognized functionalists (such as Horatio Greenough, Louis Sullivan, and Bruno Taut), the studies and reviews of their works, and the brief evaluations of the modern concept of functionalism which have appeared quite frequently in architectural periodicals; one of the best of the latter is Lewis Mumford article on "Function and Expression in Architecture," in the Architectural Record.
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