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- [S1] FamilySearch Family Tree, https://www.myheritage.com/research/record-40001-1050950089/jacob-kostichka-in-familysearch-family-tree.
Jacob Kostichka Gender: Male Birth: July 20 1883 - Wisconsin Military Service: Between 1917 and 1918 - Door County, Wisconsin, United States Military Service: 1942 - Forestville, Door, Wisconsin, United States Residence: Forestville, Door, Wisconsin Residence: 1900 - ED 58 Lincoln town, Kewaunee, Wisconsin, United States Residence: 1930 - Forestville, Door, Wisconsin Residence: 1935 - Same House, , Residence: 1940 - Forestville Town, Door, Wisconsin Death: Mar 1958 Burial: Maplewood, Door, Wisconsin, United States of America Parents: <a>John Kostichka</a>, <a>Mary Kostichka (born Bednar)</a> Wife: <a>Emma M Kostichka</a> Children: <a>Edward Frank Kostichka</a>, <a>William J Kostichka</a>, <a>Francis J Kostichka</a> Siblings: <a>Anna Fett (born Kostichka)</a>, <a>Rose Castonguay (born Kostichka)</a>, <a>Mathias Kostichka</a>, <a>Emma Lauscher (born Kostichka)</a>, <a>Joseph J. Kostichka Sr.</a>, <a>Elizabeth Detampel (born Kostichka)</a>, <a>Charles Kostichka Sr.</a>, <a>John Kostichka</a>, <a>Frank Kostichka</a>, <a>Wenzel Kostichka</a>, <a>Mary Stich (born Kostichka)</a>
- [S13] United States World War I Draft Registrations, 1917-1918, https://www.myheritage.com/research/record-10513-10716667/jacob-kostichka-in-united-states-world-war-i-draft-registrations.
Jacob Kostichka<br>Gender: Male<br>Birth: July 20 1883 - United States<br>Age: 33<br>Draft registration: 1918 - Door County, Wisconsin, United States<br>Nationality: United States<br>Language: English<br>Source:
- [S5] 1940 United States Federal Census, https://www.myheritage.com/research/record-10053-843804254/jacob-kostichka-in-1940-united-states-federal-census.
Jacob Kostichka<br>Gender: Male<br>Birth: Circa 1884 - Wisconsin, USA<br>Residence: 1940 - Forestville, Door, Wisconsin, USA<br>Age: 56<br>Residence in 1935: Same House - Forestville, Door, Wisconsin, USA<br>Race: White<br>Respondent: X<br>Marital status: Married<br>Wife: Emma Kostichka<br>Son: Francisco Kostichka<br>Census:
- [S250] 1900 United States Federal Census, https://www.myheritage.com/research/record-10131-127266199/jacob-kostichka-in-1900-united-states-federal-census.
Jacob Kostichka<br>Gender: Male<br>Birth: July 1883 - Wisconsin, United States<br>Residence: 1900 - Lincoln town, Kewaunee, Wisconsin, USA<br>Age: 17<br>Marital status: Single<br>Race: White<br>Ethnicity: American<br>Census:
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