What fun, trying to return or find the owner of old letters.. I am a Swanson from Mercer Co, with great grandparents from North Henderson township.. but pretty sure there is no relation... Although I was just told today there were 2 other siblings that came over in 1870 that are not accounted for as Swanson's in Mercer Co, at least not by the names of Peter Johan and Sarah Maria!! Who knows what last name they took..
Did anyone help you with this? I will look at the census, and I have an 88 year old cousin, very sharp and interested in this sort of thing that is a member of the North Henderson Lutheran Church (Swedish on both sides,,all grandparents imigrated from Sweden in the late 1800'.s
Let me know if I should still try to help you. I would love to read any letters about their lives at that time..I will send my email if you would want to e-mail a letter or two to me..