from the Major-General Commanding the Army of the United States.
Head Quarters of the Army. Washington 29th July 1831.
The leave of absence which you have asked for the purpose of enabling you to carry into execution your designs of exploring the country to the Rocky Mountains, and beyond with a view of ascertaining the nature and character of the various tribes of Indians inhabiting those regions; the trade which might be profitably carried on with them, the quality of the soil, the productions, the minerals, the natural history, the climate, the Geography, and Topography, as well as Geology of the various parts of the Country within the limits of the Territories belonging to the United States, between our frontier, and the Pacific; has been duly considered, and submitted to the War Department, for approval, and has been sanctioned.
You are therefore authorised to be absent from the Army until October 1833.
It is understood that the Government is to be at no expence, in reference to your proposed expedition, it having originated with yourself, and all that you required was the permission from the proper authority to undertake the enterprise. You will naturally in providing yourself for the expedition, provide suitable instruments, and especially the best Maps of the interior to be found. It is desirable besides what is enumerated as the object of enterprise that you note particularly the number of Warriors that may belong to each tribe, or nation that you may meet with: their alliances with other tribes and their relative position as to a state of peace or war, and whether their friendly or warlike dispositions towards each other are recent or of long standing. You will gratify us by describing the manner of their making War, of the mode of subsisting themselves during a state of war, and a state of peace, their Arms, and the effect of them, whether they act on foot or on horse back, detailing the discipline, and manuvers of the war parties, the power of their horses, size and general discription; in short any information which you may conceive would be useful to the Government. You will avail yourself of every opportunity of informing us of your position and progress, and at the expiration of your leave of absence will join your proper station.
I have the honor to be Sir, Your Ot St
(Signed) Alexr Macomb Maj Genl Comg
To Cap: B. L E Bonneville 7th Regt Infantry New York