The Rocky Mountain Saints: A Full and Complete History of the Mormons is a book by T. B. Stenhouse written in 1873 which gives a thorough treatment of the origins of the Latter Day Saint movement from the perspective of an outsider. The book is critical in tone, and is considered by many Mormons to be anti-Mormon.
The book is notable in that it was the first widely available publication containing a critique of the facsimiles in the Book of Abraham, which was made by the renowned Egyptologist Theodule Deveria.
Online copy at google books: [1]