1 page, 8vo, on Fortune embossed stationery, creased.

Renowned architect Buckminster Fuller writes Caraway about some drawings he sent offering to study them at his first opportunity in a few weeks.  He continues with some architecture and design advice: "Some years ago I worked out an isometric drafting form based on the equi-angular triangle and the hexagon tilted at 30° which made it posible to locate any three dimensional point in space, vertical or in the plane...some of the logic which led me to this form has been unraveling in your mind also. I guess that the main part of your problem is in materials, structural and mechanical technique."