| Sources |
- [S42870] RootsWeb.com, Mennell / Nichols, (Mona Caldwell).
- [S51365] 1860 census, Maine, Hancock county.
- [S8594] Birth, intention of marriage, marriage, and death records of the Town of Deer Isle, Maine, 1758-1940. Original records of.
- [S81859] 1870 census, Maine, Hancock county.
- [S3527] 1880 census, Maine, Hancock county.
- [S42709] RootsWeb.com, Hancock County Maine Project - Descendants of Peter Hardy and Elizabeth Haskell, (call number HFA Internet0360).
- [S27341] Genealogical History of Deer Isle Families, Series 2, Volume 15, Haskell, (compiled by Benjamin Lake Noyes).
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