| Sources |
- [S6302] 1930 United States Federal Census, Year: 1930; Census Place: Cambridge, Middlesex, Massachusetts; Page: 6A; Enumeration District: 0058; FHL microfilm: 2340651.
- [S6818] U.S., World War II Draft Cards Young Men, 1940-1947, National Archives at St. Louis; St. Louis, Missouri; Draft Registration Cards For Massachusetts, 10/16/1940-03/31/1947; Record Group: Records of the Selective Service System, 147; Box: 469.
- [S6819] Massachusetts, U.S., Birth Index, 1860-1970.
- [S6307] Jacobus Family Tree, David Penman Jacobus.
- [S2941] U.S., Newspapers.comâ„¢ Marriage Index, 1800s-current, The Boston Globe; Publication Date: 24/ Feb/ 1926; Publication Place: Boston, Massachusetts, USA; URL: https://www.newspapers.com/image/431159573/?article=9edddee8-9497-45db-bc4c-24fb1efef5d5&focus=0.641415,0.6871767,0.7574471,0.9294933&xid=3398.
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