Helffenstein, Abraham Ernest, 1853–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2386871A
- pdbooks.info ID: 146266
Abraham Ernest Helffenstein Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
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| Pierre Fauconnier and his descendants: with some account of the allied Valleaux | 1911 | Author | |  | |  | |    
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