Brief history of the American labor movement. 

 - Washington, D.C. :  United States Department of Labor,  1950. 
 - 66 p. :  ill. ;  20 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor unions-- United States.
<br/><br/><label>Dewey Class. No.: </label>331.88