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League One debuted for the 2004–05 season. At present, Fleetwood Town hold the longest tenure in League One, last being out of the division in 2013-14 season when they were promoted from League Two.
Derrick Corporation is a Buffalo, NY-based company in the Business Services sector.
MRINetwork is a Atlanta, GA-based company in the Business Services sector.
Cirlot Agency is a Flowood, MS-based company in the Business Services sector.
Mazer Corp is a Dayton, OH-based company in the Business Services sector.