↑ 1.01.11.2United States. 1900 U.S. Census Population Schedule. (National Archives Microfilm Publication T623) Year: 1900; Census Place: Groton, Middlesex, Massachusetts; Roll: 659; Page: 17A; Enumeration District: 0762; FHL microfilm: 1240659.
↑ 2.02.12.2United States. 1880 U.S. Census Population Schedule. (National Archives Microfilm Publication T9) Year: 1880; Census Place: Groton, Middlesex, Massachusetts; Roll: 538; Family History Film: 1254538; Page: 242A; Enumeration District: 365; Image: 0761.