Grasshoppers Darken the Sun

I have been reading Military Life in Dakota – the journal of Philippe Regis de Trobriand , published in 1951 by the Alvord Memorial Commission. De Trobriand, a colonel in the Army, was assigned to a post at Fort Stevenson, Dakota Territory in 1867. Fort Stevenson, of course, was located near the Missouri River not far from present day Garrison. He would spend two and one-half years there, and his journal provides an interesting look at life at the post, and insight into the natural history of