| Sources |
- [S27363] Genealogy of the descendants of William Haskell and Mary Tybott, (compiled by Marion S. Anderson for the Haskell Family Association).
- [S38186] 1860 census, California, San Francisco county, Home in 1860: San Francisco District 12, San Francisco, California; Roll: M653_67; Page: 381 (Reliability: 3).
- [S70020] Ancestry.com, Poland Family Tree.
- [S10986] Cemetery index, Sumner Street Cemetery, Gloucester, Essex, Massachusetts, (Find-a-Grave).
- [S43658] Vital Records of Gloucester, Massachusetts, to the year 1850.
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