Pt. 1. The art and craft of the machine -- Ausgefuhrte Bauten und Entwurfe von Frank Lloyd Wright -- The Japanese print: an interpretation -- Louis Henry Sullivan: his work -- In the cause of architecture: The third dimension; The architect and the machine; Standardization, the soul of the machine; Steel; Fabrication and imagination; The new world; The logic of the plan; What "styles" mean to the architect; The meaning of materials: stone, wood, the kiln, glass, concrete; Sheet metal and modern instance; Terms -- Pt. 2. Modern architecture, being the Kahn lectures (Princeton) -- Two lectures on architecture (Art Institute of Chicago) -- The disappearing city -- Architecture and modern life: some aspects of the past and present of architecture -- "The architectural forum" -- Pt. 3. The natural house -- A testament.