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- [S119332874] Ancestry.com, New York, State Census, 1915, (Ancestry.com Operations, Inc.), New York State Archives; Albany, New York; State Population Census Schedules, 1915; Election District: 10; Assembly District: 10; City: New York; County: Kings; Page: 10.
- [S119332872] Ancestry.com, New York, State Census, 1925, (Ancestry.com Operations, Inc.), New York State Archives; Albany, New York; State Population Census Schedules, 1925; Election District: 28; Assembly District: 17; City: Brooklyn; County: Kings; Page: 6.
- [S119333036] Ancestry.com, 1920 United States Federal Census, (Ancestry.com Operations, Inc.), Year: 1920; Census Place: Brooklyn Assembly District 10, Kings, New York; Roll: T625_1159; Page: 12B; Enumeration District: 578; Image: 1156.
- [S119332878] Ancestry.com, New York, State Census, 1905, (Ancestry.com Operations, Inc.), New York State Archives; Albany, New York; State Population Census Schedules, 1905; Election District: A.D. 09 E.D. 15; City: Brooklyn; County: Kings.
- [S119332501] Ancestry.com, 1910 United States Federal Census, (Ancestry.com Operations Inc), Year: 1910; Census Place: Brooklyn Ward 9, Kings, New York; Roll: T624_960; Page: 10A; Enumeration District: 0166; FHL microfilm: 1374973.
- [S119332468] Ancestry Family Trees, (Online publication - Provo, UT, USA: Ancestry.com. Original data: Family Tree files submitted by Ancestry members.), Database online.
Record for Patrick Gregory
- [S119332468] Ancestry Family Trees, (Online publication - Provo, UT, USA: Ancestry.com. Original data: Family Tree files submitted by Ancestry members.), Ancestry Family Tree.
- [S119332520] Ancestry.com, 1900 United States Federal Census, (Ancestry.com Operations Inc), Year: 1900; Census Place: Brooklyn Ward 8, Kings, New York; Roll: 1047; Page: 6A; Enumeration District: 0095; FHL microfilm: 1241047.
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