Harvey Wolff

Haynes Group Ltd. is a holding company, which engages in the business of producing and selling automotive and motorcycle repair manuals. It operates under the United Kingdom and Europe, and North America and Australia geographical segments. The United Kingdom and Europe segment includes publication and supply of automotive repair and technical information to the do-it-yourself and professional automotive aftermarkets in both print and digital format. The North America and Australia segment is involved in publishing do-it-yourself repair manuals for cars and motorcycles. The company was founded by John Harold Haynes on May 18, 1960 and is headquartered in Yeovil, the United Kingdom.

Hopkins Manufacturing Corp. engages in the manufacture of towing products and functional accessories for the automotive and recreational vehicles. It provides towing electrical products, snow and ice tools, cleaning tools, motorcycle and safety helmets, fluid handling products, fuel filter funnels, vehicle organizers, mitts, sponges, drying and detailing towels, premium tools, power accessories, auto air fresheners, booster cables, driver awareness solutions, dusting and drying solutions, auxiliary braking systems, high performance mud guards and garage solutions. The company was founded by E. L. Hopkins and R. E. Hopkins in 1953 and is headquartered in Emporia, KS.

Haynes North America, Inc. engages in the publication of books. It offers, automotive, powersport, climber repair, hilton repair, and tips and tutorials manuals. The company is headquartered in Newbury Park, CA.