Johannsen, Robert Walter,  1925- <br/><br/>
The Union in crisis, 1850-1877 / 
Ed. by Robert W. Johannsen. 
 - New York :  Free Press,  [1965]. 
 - x, 294 p. ;  21 cm. 
 - Sources in American history / Ed.: George H. Knoles  5 .
 - Sources in American history,  5 .
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--History--Sources.--1849-1877