Twombly, Robert Charles, 1940- <br/><br/>
Frank Lloyd Wright :  an interpretive biography / 
by Robert C. Twombly 
 - New York :  Harper,  1973 
 - x, 373 p.:  ill. ;  22 cm. 
<br/><br/>Bibliography: p. 343-362 
<br/><br/><label>ISBN: </label>0060903597 
<br/><br/><label>LCCN: </label>73-003190 
<br/><br/><label>Subjects--Personal Names: </label><br/>Wright, Frank Lloyd, 1867-1959