1. 1905 Early Census Making in Massachusetts. Charles E. Goodspeed, Boston.
2. 1959 The Population of the United States. The Free Press of Gencoe, Illinois.
3. Brigham, W., ed. 1836 Laws of the Colony of New Plymouth, Part I. Boston.
4. Bureau of the Census 1967 A Century of Population Growth. Genealogical Pub. Co., Baltimore.