I'm just starting my search into my Gamm ancestors; first of all I want to thank Lise for providing a great starting point -- Edward C. Gamm was my great grandfather. (My grandfather was Edward C. Gamm born 1878; father Keith Gamm b1913 St. Paul, Minnesota.) I wasn't sure which generation came from Germany before. I would love copies of notes on his life but Lise's email is from 2000 and email addresses change... so I thought I'd post a note here as well as sending to the email she posted.
I've added descendants for son, Edward. (Grandson, Keith was a professional musician--piano player. It looks like there's some type of history with the piano back to his grandfather.... )
I'm also looking for advice on how to go farther back, to his roots in Germany.
Again, thanks! Diane Gamm in Minnesotadiane@gammdesign.com