William H. Seward, September 20, 1861

Washington, September 20, 1861.

Hon. SIMON CAMERON, Secretary of War:

SIR: I have the honor to inclose an extract from a dispatch of the 28th ultimo, received from Mr. Corwin, relative to an apprehended invasion of Sonora by the insurgents of the United States, and to recommend that the subject be submitted to the General in-Chief commanding the armies of the United States for such directions as may be deemed most proper, asking at the same time whether a force of 10,000 men would not be a reasonable one for the service to be performed.

your obedient servant,