150 years of electric horology :  with references to the exhibit at the 1992 NAWCC national convention, Chicago, IL, July 1-4 / 
 One hundred fifty years of electric horology 
edited by Elmer G. Crum and William F. Keller. 
 - vii, 101 pages :  illustrations ;  29 cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>93210203  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clocks and watches, Electric--History.--United States<br/>Clocks and watches, Electric.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States.
<br/><br/><label>Subjects--Index Terms: </label>Clock (general) NAWCC Midwest Electric Horology Group catalog electrical