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- [S10] Ancestry.com, Pennsylvania, Death Certificates, 1906-1966, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2014;), Pennsylvania Historic and Museum Commission; Pennsylvania, USA; Pennsylvania (State). Death certificates, 1906–1966; Certificate Number Range: 069501-072500.
- [S1] Ancestry.com, 1920 United States Federal Census, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2010;), Year: 1920; Census Place: Susquehanna, Dauphin, Pennsylvania; Roll: T625_1559; Page: 4A; Enumeration District: 143.
- [S12] Ancestry.com, U.S., Social Security Applications and Claims Index, 1936-2007, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2015;), U.S., Social Security Applications and Claims Index, 1936-2007.
Name: Albert R Heck;
Gender: Male;
Spouse: Ella M Stuiber;
Child: John William Heck
- [S2] Ancestry.com, U.S. City Directories, 1822-1995, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2011;), Publication Title: Cumberland, Maryland, City Directory, 1917.
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