A new book, “The Houses of Louis Kahn” (Yale University Press, $65), provides an architectural bridge between the personal and the professional stories, focusing on the nine houses Kahn completed, and designs for two dozen more. The story told by the authors, George H. Marcus and William Whitaker, is one of warm client relations, attention to the smallest domestic detail and a philosophical search for the best arrangement of rooms to call home. — nytimes.com