Harry M. Stevens
Harry Mozley Stevens (1856–1934) was a food concessionaire from Derby, England who has been variously attributed  as the inventor of the hot dog, but has nevertheless been credited with being America's foremost ballpark concessionaire. In 1887 he founded Harry M Stevens Inc., a stadium concessions company which was based in Cranbury, New Jersey until it was acquired by Aramark on December 12, 1994.
Harry Stevens who was born at Litchurch in Derby, England in 1856 but emigrated to Niles, Ohio in the 1880s. On arrival in the States, he became obsessed with baseball and quickly made his mark by designing and selling the sport's first scorecard - a design still in use to this day. By 1900, Stevens had secured contracts to supply refreshments at several Major League ballparks across the US. He also began to sell scorecards to fans with the phrase You can't tell the players without a scorecard.
Stevens is credited with telling the story that at the home opener of the New York Giants on a cold April day in 1901 there was limited demand for ice cream. He decided to sell German sausages known as 'dachshund sausages.' When the staff ran out of the wax paper on which the sausages were traditionally served Stevens had one of his employees purchase some buns and had the staff place the hot dogs in the buns, creating what became known today as the hot dog. A cartoonist, recording the event, was reputed to have been unable to spell dachshund, so wrote hot dogs instead. The family has since acquired the original cartoon and has preserved it.
Despite many disputes over the claim to Stevens having been the inventor of the hot dog, in early 2013 Derby City Council and Derby Civic Society jointly announced they would erect a Blue plaque to his memory on his first marital home at 21 Russell Street in Derby, England.
On June 30, 2013, Niles, Ohio resurrected "Harry Stevens Hot Dog Day". The downtown event included live music, weiner dog races and costume contests, a hot dog dressing (sauce) contest, baseball clinic, and cornhole tournament among other activities. Food and merchandise vendors were also on-hand. 
- Derby's claim to the hot dog. Retrieved 12 Feb 2013
- 'Hot Dog,' This Company Says, After Being in Business Almost 100 Years, Gail Collins, January 15, 1985
- Giants Past and Present, Dan Fost, MVP Books, 2011, p130
- Chapman, Francesca. "Aramark Swallows Harry M. Stevens," Philadelphia Daily News, Tuesday, December 13, 1994.
- Derby Evening Telegraph, 12 Feb 2013, "List Of Derbeians To Be Honoured"
- Hot dog seller Harry Stevens remembered with blue plaque, Derby Telegraph, Chris Mallett,12 February 2013