This publication presents the results of research conducted on the Propylaia of the Athenian Akropolis by William Bell Dinsmoor, who began his study in 1908, and William Bell Dinsmoor Jr., who took up the project in 1962. Part I comprises William Dinsmoor's account of Mnesikles' planning of this innovative and unique structure during construction, and will be of particular interest to theorists and historians of architecture. Part II, a product of...