Howard, Warren S. <br/><br/>
American slavers and the federal law 1837-1862 

 - Berkeley :   University of California Press,  1963 
 - xii, 336p. :    ill. ;   24cm. 
<br/><br/>Includes bibliographical references<br/><br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Slave trade<br/>Canada
<br/><br/><label>LC Class. No.: </label>E449.H8495