Culbertson is the name reformed from Culberson and Culbert: In places: Culbertson, Montana Culbertson, Nebraska In people: Culbertson (name) Ely Culbertson (1891-1955), American contract bridge player, author and promoter, often referred to simply by his surname Culbertson four-five notrump, a slam-seeking convention devised by Ely Culbertson Culbertson system, the earliest dominant bidding system in contract bridge, devised by Ely Culbertson In other uses: Culbertson Mansion State Historic Site, in New Albany, Indiana, USA Culbertson's Path, in Pennsylvania, USA Cordelia A. Culbertson House, a registered historic location in Pasadena, California See also Culberson (disambiguation)