Graebner, Norman A. <br/><br/>
An uncertain tradition :    American Secretaries of State in the twe ntieth century /  
N.A. Graebner. 
 - New York :    McGraw-Hill,    1961. 
 - ix, 341 p. ;    24 cm. 
 - McGraw-Hill series in American history .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Corporate Names: </label><br/> United States.   Department of State  -- Biography.
<br/><br/><label>Subjects--Topical Terms: </label><br/> Cabinet Officers -- United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/> United States -- Foreign relations -- 20th century.
<br/><br/><label>Dewey Class. No.: </label>353.1