Clarence Samuel Stein (1882–1975) was an American urban planner, architect, and writer, a major proponent of the Garden City movement in the United States. His first job as an architect was with Bertram Grosvenor Goodhue, who hired him as a draftsman for the Panama-California Exposition. Richard Amero believed that Stein was responsible for laying out El Prado and the Plaza de Panama. In 1915 he presented a talk on the Panama-California Exposition before the New York chapter of the American Institute of Architects. He wrote an introduction on the triumph of the Spanish Colonial style for the book The Architecture and the Gardens of the San Diego Exposition. Stein would become a respected urban planner and won the AIA Gold Medal in 1956, the highest award of the American Institute of Architects.
In June, 1915, Stein spoke to the American Institute of Architects about the Panama-California Exposition. Here is the text of that speech.