Thanks for quick response. I had found these two, plus one other family that had sons named Robert at about the right ages, and needed some family info to decide amongst the three of them.
I'm descended from the Robert (identified with the middle initial H.), who from one reference was born in Boise. But there have been no other sources that referred to Boise.
I was hopeful the restaurant/diner and/or the Dines Coal company might help point to the right one. Critical time is the 1939-1940 years.
Thanks again, and let me know if there is anything else to help narrow the search down to just one.