At which county fair did Frank and Charles Mences claim to sell the first hamburger ?
The story of " Old Dave 's Hamburger Sandwich " is also found mentioned in Ronald McDonald 's book " The Complete Hamburger " a collbrative effort with Richard McDonald the Founder of McDonald'sIn the same year that Charlie Nagreen claimed to have developed his " Hamburger Charlie " , the brothers and street cooks Frank and Charles Menches of Akron , Ohio claimed to have sold a ground beef sandwich at the Erie County Fair .