I have some hand illustrated cards with poems in them made by John B Fitz according to people who saw them on fB. I'm trying to find someone who would like them since I have no personal ties to them. I saw in an article of the Miles City Star that he had at least a daughter and a son.

Neither child stayed in Miles City. The local Presbyterian Church, of which he was the pastor for many years, might be interested. Not sure who the minister is these days but you could contact them.