Feb 28 1863. Our naval expedition along the Yazoo River is progressing. I sent further instructions to Gen. Prentiss,
To Brig. Gen. Benjamin M. Prentiss
Brig Genl B. M. Prentiss Commd.g Dist. of Eastern Ark
I send you the smallest stern wheel steamer we have here. I want you to keep up communication with the Yazoo Expedition, and report progress to me from time to time, supply them with rations and everything required by them so far as it is in your power.
Inform Genl Ross that by the last information I have had from that country the rebel, force is small all the way north from Haines Bluff at Grenada there is not over two thousands men and I doubt if that many.
The Advance boats should be cautious in approaching Grenada and also Yazoo City looking out for torpedoes. In approaching a town they should notify the inhabitants to surrender and give them but a very short time, say thirty minutes at the outside to make up their minds and not permit them to move their women and children Being near where all vessels from Genl Ross expedition strike the river, act on your own Judgement in all matters requiring prompt action
U. S. Grant
The Papers of Ulysses S Grant, Vol 7, p 369
National Archives, RG 393, Dept. of the Tenn., Letters Sent