I have no idea about the material you asked about, since it was not my focus
of research. What pleased me was the indexed cemeteries (including names of
all those buried in the Godfroy cemetery which I have seen discussed here),
and an index of obits going back to 1824, and microfilm of the newspapers in
which they appeared. You could call the library to see if they have the
Indian Affairs data you need.
Jan Hall