I am trying to help a friend find out information on her father, Robert Leo Knapp. She thought he was born in Brattleboro, Connecticut. But the only Brattleboro I can find is Vermont.

Any information and help is greatly appreciated.

Robert Leo Knapp born June 4, 1905 or 1905, Brattleboro.
Died July 28 1962 or 1961, Fort Collins, Colorado.

His fathers name is supposed to be Charles. She remembers receiving letters from someone in Montpelier, Vermont.

Maybe has sisters or relatives Ina & Elsie.