 Five years after his death, his company expanded its facilities to the mass production of cigarettes.A lifelong bachelor, Macdonald bequeathed his tobacco company to Walter and Howard Stewart, the two sons of company manager David Stewart.The company remained in the Stewart family until 1973 when David M. Stewart (1920–1984) sold it to the American tobacco giant R. J. Reynolds Tobacco Company and used the proceeds to establish the Macdonald Stewart Foundation for charitable causes.