A more perfect union / 
Beverly J. Armento ... [et al.]. 
 - Boston :   Houghton Mifflin,  1994. 
 - T49, xvii, 747 p. :  col. ill., col. maps ;  31 cm. 
 - Houghton Mifflin social studies .
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0395527317 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Politics and government--Study and teaching Secondary
<br/><br/><label>LC Class. No.: </label>JK274