In the 1930s and for decades thereafter Lafayette was the largest mail-order supplier of electronic parts, equipment, tools and supplies.  Their clients were mainly electronic repair shops, hobbyists and amateur radio operators.  They also sold their own line of radio receivers, which in 1935 ranged from a 4 tube table set ($9.95) to a deluxe 12 tube radio-phono console ($158.00).

Mallory was best known as a capacitor and vibrator manufacturer, but with the addition of the Yaxley brands their line of original and replacement parts included power resistors, potentiometers, switches, panel lamp assemblies, jacks and plugs.

Stancor was one of the largest manufacturers of audio and power transformers and chokes.  They supplied original parts for electronic equipment manufacturers, as well as parts for the service trade and kits for hobbyists and amateur radio operators.

As their name implies GC was originally a chemical manufacturer who developed a line of cements and other supplies for the radio service trade.  Over the course of half a century their line expanded to an amazing variety of items.  In 1942 it already included dial belts and cord, wire, switches, cabinet repair kits and specialized hardware for the service trade.

Newark was another distributor of electronic parts and supplies, competing with Lafayette, Allied, Radio Shack and others.  Today Newark has become the largest of all parts distributors, serving the electronic repair trade, hobbyists, broadcasters, manufacturers and industrial users.