CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins83% CONFIDENCEOverall confidence: 83%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or betterCulinaryLore[1] says Kroc's first franchise opened "in Des Plaines, Illinois on April 15, 1955" and Wikipedia's[2][3] McDonald's article gives the start date as 15 April 1955 in Des Plaines and says the corporation "credits its founding to franchised businessman Ray Kroc on April 15, 1955".
On 15 April 1955 Ray Kroc opened his first McDonald's franchise restaurant in Des Plaines, Illinois, the ninth McDonald's overall, a date the present McDonald's Corporation credits as its founding.