Thank you for your interest and request. I am the great grandson of Vincenz Conrad. My grandmother, Johanna, was one of his daughters. I too have copies of one of his civil war photos and the family coat of arms. I would love to see what you have!
Of interest to you might be information that I have collected about the Conrad family in Fountain City, Wisconsin and in S.E. Switzerland. I have visited this area in Switzerland were the Conrad fortress is twice - most recently in 2014.
I live near Minneapolis. In what part of the country are you? Who was your Great Grandfather? Perhaps we can get together to share stories and materials.
All my best,