I have not found sources for Hulda Bertha Haun. There is a private family tree on Ancestry.com, which is where I got her date and place of death. She was only two yrs old when she died in Germany. The source below is the only one I have found
Source: WikiTree Under license to MyHeritage.com [online database]. Lehi, UT, USA: MyHeritage (USA) Inc. https://www.myheritage.com/research/collection-10109/wikitree Original data: WikiTree, http://www.wikitree.com
Record: https://www.myheritage.com/research/record-10109-6129/hulda-bertha-haun-in-wikitree Hulda Bertha (born Haun)
Citation: Hulda Bertha Haun Birth: June 28 1866 Death: Mar 19 1868 Parents: Ernst Christian Haun, Catharina Elisabetha Baumgarten Siblings: Carl Christian Wilhelm Haun, Marie Ernestine Haun, Emilie Haun, Ferdinand Otto Haun, Hugo Freund Haun, Hulda Natalie Haun, Otto Haun, Minna Haun
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