To say that this 1920's classic is anything other than a masterpiece would be proof of insanity. By "interpreting" a Law, (NY Zoning 1917), Ferriss found beauty in the hope of what might be. In today's world of 3D CAD and computers, Ferriss was able to use canvas to convey not merely ideas and requirements, but opportunities and emotions. There are few books that inspire architects more than this. The value of original prints of this is evident in that single plates are sold in New York for $20 apiece by street vendors Architects are usually too caught up in the details to appreciate the beauty of buildings. Leave it then, to a painter to bring out the beauty and grace of buildings that were meant to inspire, or were not meant to be.