Lowell :  the story of an industrial city : a guide to Lowell National Historical Park and Lowell Heritage Park, Lowell, Massachusetts / 
produced by the Division of Publications, National Park Service. 
 - Washington, DC :  U.S. Department of Interior,  c1992. 
 - 111 p. : ill.(chiefly in col.) 
 - Official national park handbook; no. 140 .
<br/><br/> Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Textile industry--Massachusetts--Lowell--History<br/>Textile workers--Massachusetts--Lowell--History<br/>Lowell (Massachusetts)--Economic conditions<br/>Lowell (Massachusetts)--Social conditions