How the big three auction chains came to be
Manheim Auctions Inc.: Founded in 1945. Now has more than 80 auctions in North America and Great Britain.
ADT Automotive Inc.: Founded in 1982. Now has 28 U.S. auctions.
Adesa Corp.: Founded in 1992 with four auctions. Now has 28 auctions in North America.
Source: National Auto Auction Association