Charles Ro Supply Co, “America’s Largest Train Store”: Mustang and Corsair/Corvair
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Charles Ro Supply Co, "America’s Largest Train Store". Pasting from Wikipedia:
Charles Ro Supply Company
USA Trains started out as part of Charles Ro Supply Company, the biggest train store, as well as America’s largest Lionel dealer. USA Trains is a family-run business, started by father and son Charles Ro senior and junior.
Charles Ro Supply Company was established in and it started out as a beauty shop business of 4 salons with sixty hairdressers but moved into the hobby business when Charles Ro, Sr. began selling used Lionel trains at one of the storefronts in Everett, Massachusetts. In 1972 Ro started purchasing directly from Lionel to sell them mail-order. By 1980, Ro had completed Lionel’s first million dollar order. Also at this time, the company moved to a new location in Malden, Massachusetts into an old supermarket building. 
In 1982, Lionel moved production to Mexico, not producing model trains for 9 months. To make up for this, Ro began selling German-made large-scale model trains that were suitable for outdoor use. Realizing their popularity, Ro began making his own large scale model trains under the name Charles Ro Manufacturing Company. In 1989, business was moved into a new building, it’s current location, in Malden, Massachusetts with 3 storeys and over 50,000 square feet of area. Until 1995, when manufactuuring was moved offshore, USA Trains were manufactured at this new location which also served as the store.
In 1998, the GP 7/9 locomotive won Model Railroader‘s Reader’s Choice Award
The Ultimate Series line introduced in 1999 won four Reader’s Choice Awards
In 2003 , USA Train’s Jle Hudson won the 2003 Reader’s Choice Award
USA Trains claims to have the world’s largest selection of G scale rolling stock