Manufacturing
American Iron & Alloys Corp., Applied Spectrometry Associates, Inc., Geographics, Meteor Lites, Rolled Threads Unlimited, Ltd., Schaefer Brush Mfg. Co., Inc., Up-N-Atom, Inc., Waukesha Bearings, Waukesha Engine Division, Waukesha Foundry, Inc.
Kalmbach Publishing Co.
Publisher of Astronomy magazine and other astronomy products.