Arnold Lorenzen. Pencil Points 18 August 1937, 501 Dorian Dorian Paquet and Vitra. Pencil Points 18 April 1937, 217 Iakov Chernikhov. Envisioning Architecture (MoMA, New York, 2002) 1933, 79 Norman Bel Geddes. Pencil Points 18 January 1937, 12 Walter Dorwin Teague. Pencil Points 14 October 1933, 439 Herbert Bayer. Envisioning Architecture (MoMA, New York, 2002) 1938, 18 Le Corbusier. Envisioning Architecture (MoMA, New York, 2002) 1932, 75 Eric Mendelsohn. Envisioning Architecture (MoMA, New York, 2002) 1935, 89 Walter Dorwin Teague. Pencil Points 14 October 1933, 438 Thomas S Tait. Architectural Record 68 30 October 1930, 314