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. - [United States] : [Skokie, Ill.?] ; NAWCC Chapter 125 ; Midwest Electric Horology Group, c1992. - vii, 101 p. : ill. ; 28 cm.

Includes bibliographical references.

93210203


Clocks and watches, Electric--History.--United States

TS543.U6 / A17 1992



Crum, Elmer G. Keller, William F.