These are my great grandparents. Their daughter-in-law is Bertha Lowum Bergmann, her husband was Otto Adolf Bergmann b.16 Jul 1887, d.05 Apr 1932. I have been doing research on my family for a long time and have only sparse informantion on the Bergmann side. Otto had a brother Edward. I also have the spelling as Gustave and that both Henretta and Gustave had a father named Michael that is unchecked and needs research.
John