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- [S2745] Ancestry.com, U.S., Find A Grave Index, 1600s-Current, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2012;).
Record for Alma Leidel
https://search.ancestry.com/cgi-bin/sse.dll?db=60525&h=282639061&indiv=try
- [S1310] Ancestry.com, Philadelphia, Pennsylvania, Marriage Index, 1885-1951, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2011;).
Record for Herman H Leidel
https://search.ancestry.com/cgi-bin/sse.dll?db=2536&h=771284&indiv=try
- [S3688] Ancestry.com, Newspapers.com Obituary Index, 1800s-current, (Name: Ancestry.com Operations Inc; Location: Lehi, UT, USA; Date: 2019;), The Philadelphia Inquirer; Publication Date: 3 Aug 1999; Publication Place: Philadelphia, Pennsylvania, USA; URL: https://www.newspapers.com/image/179192870/?article=df01731e-825d-464c-a607-03fa18ce50e1&focus=0.5135855,0.7218694,0.66829807,0.7596656&xid=3355.
Record for Alma A. Montgomery
https://search.ancestry.com/cgi-bin/sse.dll?db=61843&h=419149603&indiv=try
- [S3831] Ancestry.com, 1950 United States Federal Census, (Name: Ancestry.com Operations, Inc.; Location: Lehi, UT, USA; Date: 2022;), National Archives at Washington, DC; Washington, D.C.; Seventeenth Census of the United States, 1950; Year: 1950; Census Place: Philadelphia, Philadelphia, Pennsylvania; Roll: 5824; Page: 5; Enumeration District: 51-1700B.
Record for Herman Leidel
https://search.ancestry.com/cgi-bin/sse.dll?db=62308&h=242041520&indiv=try
- [S2314] Gardien Newsletter - Clan Montgomery Society, (Name: Clan Montgomery Society International; Location: http://www.clanmontgomery.org/;), Vol 44 No 4 Fall 2025 page 15 Montgomery, John Carlos (1835-2025) Montgomery Leidel, Alma Adair (1921-2025).
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