Re: Related Question (about Italian citizenship)
asammart wrote: Was it possible at that time to be a dual citizen?
The concept of dual citizenship means that a person is a citizen of two countries at the same time, and this has always been possible.
However, a different question is, if one country accepts that its citizens have a second nationality.
I'm not sure about older Italian laws and if and how this could effect your question.
To answer that: your father was an Italian citizen, if your grandfather still was an Italan citzen as well as an US-American - and that easily could by clarfied, as already said above, on the consulate.