I have done research on Buol families in Minnesota, Wisconsin, and Iowa, and somewhat in Nevada, and after recently getting copies of the whole Stammbaum der Familie Buol, I am planning to begin this fall a project to update the Stammbaum in several ways:
1) To update as much as possible all information, including the continuation of Buols in Switzerland, and also providing supplementary information on any lines that the Stammbaum may have missed
2) To create a similar Stammbaum for Buols in America. I would use the same original 19 original Stammbaum Tables and within each table document members from that branch who immigrated to America and the subsequent lines descended from them.
3) To chart all descendants of Buols, not just through the male line that carries the Buol name.
If you would like to contribute, please email me at the address listed when you click on my name.