- Sep 1891 – Birth – ; New York, USA
- 1900 – Residence – Marital Status: Single; Relation to Head: Son ; Orangetown, Rockland, New York, USA
- 1905 – Residence – Relationship to Head: Son ; Ramapo, Rockland, New York, USA
- 1910 – Residence – Marital Status: Single; Relation to Head of House: Son ; Ramapo, Rockland, New York, USA
- 1 June 1915 – Residence – Relation to Head of House: Son ; Ramapo, Rockland, New York, United States
- 1900 – Residence – Marital Status: Single; Relation to Head: Son ; Orangetown, Rockland, New York, USA
- 1905 – Residence – Relationship to Head: Son ; Ramapo, Rockland, New York, USA
- 1910 – Residence – Marital Status: Single; Relation to Head of House: Son ; Ramapo, Rockland, New York, USA
- 1 June 1915 – Residence – Relation to Head of House: Son ; Ramapo, Rockland, New York, United States
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M | Henry M Blackwell | ||
Birth | Sep 1891 | New York, USA | |
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