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- [S19]  1900 US Federal Census, (www.ancestry.com).
 
CENSUS: 
1900: 
Name: Bertha Seibert Home in 1900: Du Quoin, Perry, Illinois Age: 10 Estimated birth year: 1890 Birthplace: Illinois Race: White Relationship to head-of-house: Daughter  Image source: Year: 1900; Census Place: Du Quoin, Perry, Illinois; Roll: T623 335; Page: 4B; Enumeration District: 49 
 
  
- [S30]  1910 US Federal Census, (www.ancestry.com).
 
Name: Bertha Seibert Age in 1910: 20 Estimated Birth Year: abt 1890 BirthPlace: Illinois Relation to Head of House: Daughter Father's Name: Ferd Father's Birth Place: New York Mother's Name: Mary Mother's Birth Place: Missouri Home in 1910: Du Quoin, Perry, Illinois Marital Status: Single Race: White Gender: Female 
 
  
- [S24]  1920 US Federal Census, (www.ancestry.com).
 
Name: Bertha Seibert Home in 1920: Du Quoin, Perry, Illinois Age: 28 years Estimated Birth Year: abt 1892 BirthPlace: Illinois Relation to Head of House: Daughter Father's name: Ferd Father's Birth Place: New York Mother's name: Mary Mother's Birth Place: Illinois Marital status: Single Race: White Sex: Female Able to read: Yes Able to Write: Yes Image: 813 
 
  
- [S25]  1930 US Federal Census, (www.ancestry.com).
 
Name: Bertha Seibert Home in 1930: Du Quoin, Perry, Illinois Age: 40 Estimated Birth Year: abt 1890 Relation to Head of House: Daughter Father's Name: Ferd Mother's Name: Mary 
 
  
- [S40]  Illinois Statewide Death Index, 1916?1950, (http://www2.sos.state.il.us/GenealogyMWeb/IDPHDeathSearchServlet).
 
SEIBERT BERTHA LENORA N/S UNK 0000160 1939-08-04 PERRY - - 
 
  
- [S608]  Illinois Marriages, 1851-1900.
 
SEIBERT Ferdinand KUNZ Mary November 13 1879 S/58 
  
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