According to Sally Campbell, Under the Shadow of Mt Haggin (Deer Lodge County History Group, 1975), the building cost about $100,000, is 110 feet high, and the interior frescoes (sorry, I should have went inside and got pics of them) were painted by Consolidated Artists of Milwaukee.
Most surpising of all, perhaps, is that the monument seems to be made of the same sort of sandstone as the courthouse.
Should we love the blazing star, and hate the knapweed? Well, in their place, all species are beautiful. So yes, love the natives. But there is not much use in hating the exotics: many, like knapweed and rainbow trout, are here to stay. And all have their virtues. Live with it, at least in cases where native species are not endangered.