John W. Estey

S & C Electric Co. designs and manufactures switching and protection products for electric power transmission and distribution. It offers automation controls, automated switching equipment, energy storage systems, fusing equipment, handling tools, and metal-enclosed switchgear. The company was founded by Nicholas J. Conrad and Edmund O. Schweitzer in 1911 and is headquartered in Chicago, IL.

Potash Corporation of Saskatchewan, Inc. is a fertilizer company, which produces crop nutrients, including potash, phosphate and nitrogen. It operates through the following segments: Potash, Phosphate, Nitrogen, and Others. The Potash segment includes mineral deposits left by ancient evaporated seas and is used as a crop nutrient. The Phosphate segment manufactures acids for use in fertilizer, feed, and industrial products. The Nitrogen segment produces a broad range of nitrogen products, including ammonia, urea and other products such as nitric acid, ammonium nitrate, and nitrogen solutions. It also produces potash and granular grades, diammonium phosphate, monoammonium phosphate, phosphoric acid, ammonia, and urea. The company was founded on June 4, 1953 and is headquartered in Saskatoon, Canada.

The National Electrical Manufacturers Association is an organization that provides access to an infrastructure funding tool for its members. The private company is based in Rosslyn, VA. Kevin J. Cosgriff has been the CEO of the company since 2014. The company also offers white papers, standards, programs, and events related to electrical manufacturing.

The Executives Club of Chicago operates as a premier membership organization and business forum. The non-profit company is based in Chicago, IL.

Peripheral Computer Support, Inc. provides aftermarket repair and logistical support services to the computer storage device industry. It offers storage device original equipment manufacturers and systems integrators to outsource logistical support services, repair services and non-core functions. The firm services include reverse logistics, supply chain management, and warranty support services. The company was founded in 1992 and is headquartered in Fremont, CA.

Adler Planetarium & Astronomy Museum Operates and maintains planetarium and museum. It provides astronomy education for students, adults and families through variety of lectures and special events. The company was founded by Max Adler in 1930 and is headquartered in Chicago, IL.

Southwire Co. LLC engages in the manufacture and distribution of electrical wires and cables. It products include tools and equipment, building wire, flexible conduit, industrial products, lead wire, metal clad cable, pump and irrigation, rubber cord, low voltage cables, overhead covered conductors, rod, substation, copper bare and covered, international products, portable cord, telecom, and medium voltage primary underground distribution. The company was founded by Roy Richards, Sr. in 1937 and is headquartered in Carrollton, GA.

The American Writers Museum operates a museum. The private company is based in Chicago.