Holley Motor Company. The acclaimed performance carburetor maker began here in 1899. The innovative carburetor on George and Earl Holley's Motorette car gained the attention of Henry Ford. Soon specializing in this technology, they supplied Ford, and later the aircraft industry, and the US military.

57 Holley Ave., Bradford, PA, United States

Bradford Oil Refinery. One of the oldest refineries in continuous production in the US was founded near here in 1881 by pioneer independent oilmen Robert Childs, Eli Loomis, and William Willis. The original refining capacity was 10 barrels a day. One-hundred twenty-five years later, the refinery processed over 9000 barrels daily, purchasing more than three million barrels of Pennsylvania Grade crude oil annually, most of it from wells within 125 miles.

at refinery entrance, 77 N Kendall Ave., Bradford, PA, United States