Litwack, Leon F. <br/><br/>
North of slavery :  the Negro in the free States, 1790-1860 / 
Leon F. Litwack 
 - Chicago :  University of Chicago Press,  1961 
 - xi, 318 p. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 6.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Slaves--United States<br/>Slavery--United States<br/>Slavery--Anti-slavery movements--United States
<br/><br/><label>Dewey Class. No.: </label>326.973