1992 NAWCC Chicago National Convention Exhibit. NAWCC Chapter #125 Midewest Electric Horology Group. Edited by Elmer G. Crum and Wiliam F. Keller. The book gathers information on the people and firms which were involved in the development of electric horology. Part I of the book focuses on history and Part II focuses on a catalog of the exhibits. 101 pages. Soft cover with slight scratch. Base size: 11"W x 8 3/8"D x 3/8"H.