"United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MG7S-PM5 : accessed 28 Oct 2014), Elizabeth Frommer in household of Cathrine A Frommer, Abington, Montgomery, Pennsylvania, United States; citing enumeration district (ED) 64, sheet 19B, family 401, NARA microfilm publication T624, FHL microfilm 1375390.
"United States Census, 1920," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MXML-3L8 : accessed 28 Oct 2014), Elizabeth Frommer in household of Catherine Frommer, Philadelphia Ward 34, Philadelphia, Pennsylvania, United States; citing sheet 6A, family 94, NARA microfilm publication T625, FHL microfilm 1821631.
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