Hi Joyce
Thanks for your help. My brother's mother in law was born out of wedlock to Thomas while he was still married to someone else. His daughter Kathy lives in Wisconsin and likely has step siblings from Thomas in NH. A Lori A Gibbons is likely one of Thomas' daughter and she has a family tree posted on Ancestry.com. I emailed Lori a few days ago but no response.
If Lori does not reply. I will try to obtain Thomas' obit from 1978 and have his daughter write letters to his survivors. Always a tense and touchy situation but I have done this twice before with success. The key is not to push too hard.
Thanks again
Jon