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- [S1898] 1910 U.S. census, Digital images, (National Archives and Records Administration, n.d.).
- [S1899] Ancestry.com, New York Passenger Lists, 1820-1957, (Name: The Generations Network, Inc.; Location: Provo, UT, USA; Date:2006;).
- [S1900] Ancestry.com, 1930 United States Federal Census, (Name: The Generations Network, Inc.; Location: Provo, UT, USA; Date:2002;).
- [S1894] Maryland State Archives Baltimore City Health Department, Death Certificates.
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- [S1891] Kauffman, Lisa, E-mail correspondence with Cliff Gittens. Privately held by Gittens, Lisa Kauffman [(E-ADDRESS) FOR PRIVATE USE,] to Cliff Gittens, e-mail<; privately held by Gittens.
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- [S1942] Ancestry.com, 1900 United States Federal Census, (Source Citation: Year: 1900; Census Place: Brooklyn Ward 9, Kings, New York; Roll: T623 1048; Page: 1A; ; Source Information:; Ancestry.com. 1900 United States Federal Census [database on-line]. Provo, UT, USA: The Generations Network, Inc., 2004. Origin.).
- [S1941] Kauffman, Lisa, E-mail correspondence with Cliff Gittens. Privately held by Gittens, Lisa Kauffman [(E-ADDRESS) FOR PRIVATE USE,] to Cliff Gittens, e-mail<; privately held by Gittens.
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