The Methodology
From DNA Adoption; adapt it for identifying unknown ancestors. Note: Three things that can add difficulty to searches: affairs, adoption, name changes.
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Tombstone Birth Date Calculator
Many older tombstones list age and date of death. This tool calculates birth date from the age of death and the date of death on the tombstone, death certificate, or obituary. Results are given in a year-month-day format.
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U.S. Inflation Calculator
Years available: 1774 to the present day; based on the Consumer Price Index.
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U.S. Newspapers and Obituaries
A linked index to sources of US newspapers and obituaries organized by state.
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Unlinked Family Clusters
The Growing Phenomenon of the Unlinked Family Cluster" by Blaine Bettinger, Genetic Genealogist blog, 16 Mar 2023
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US Railroad Retirement Board Index
Narrow search to Railroad Retirement index with drop-down menu. Covers 1936 to early 2000s.
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