Hey Karen,
I think I had a very similar breakthrough in the search (thanks to our relatives in Boulder, eh?)! Send me an email at <
jamesrmhopper@yahoo.com> and I'd love to exchange info. I think that you were sent a brief family history by Marta Been. In it, I am one of the five boys of Justine Gowen Hopper and Ken Hopper. My grandmother was Mary Czach Gowen. Thanks again for the reply, hope to speak with you soon!
Best wishes,
JIM