The American Messenger Company focused primarily on package delivery to retail stores with special delivery mail delivered for its largest client the United States Postal Service. In 1913 the company acquired a Model T Ford as its first delivery vehicle. Casey and Ryan merged with a competitor, Evert McCabe, and formed Merchants Parcel Delivery. Consolidated delivery was also introduced, combining packages addressed to a certain neighborhood onto one delivery vehicle.[7] In 1916 Charlie Soderstrom joined Merchants Parcel Delivery bringing in more vehicles for the growing delivery business. In 1919 the company expanded for the first time outside of Seattle to Oakland, California and changed its name to United Parcel Service.