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1.
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Title: Heinzmann, Henry George; personal knowledge
Author: Heinzmann, Henry George
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2.
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Title: United States Federal Census 1920
Page: Series T625, Roll 1142, Page 272 New York, Bronx
Author: Bureau of the Census, Department of Commerce
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3.
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Title: United States Federal Census 1930
Page: Series T626, Roll 269, Page 6B Connecticut, Litchfield, Barkhamsted
Author: Bureau of the Census, Department of Commerce
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4.
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Title: United States Federal Census 1910
Page: Series T624, Roll 887, Page 5A New Jersey, Hudson, Hoboken
Author: Bureau of the Census, Department of Commerce
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5.
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Title: New York, New York City Marriages 1829-1940
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6.
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Title: New Jersey State Census 1915
Page: 16A
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7.
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Title: United States Federal Census 1930
Page: Series T626, Roll 269, Page 6 Connecticut, Litchfield, Barkhamsted
Author: Bureau of the Census, Department of Commerce
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