Here are two possibilities, the R T Woods and Ruth.

Isaiah Darby

Residence Chillicothe IL; an 18 year-old Farmer.
Enlisted on 2/11/1862 at Chillicothe, IL as a Private.
On 2/15/1862 he mustered into "H" Co. IL 53rd Infantry
He died of wounds on 8/5/1863
(Died onboard hospital boat R T WOODS)
* Wounded 7/12/1863 Jackson, MS

Sources used by Historical Data Systems, Inc.:
- Illinois: Roster of Officers and Enlisted Men
- Illinois State Archives @ http://www.ilsos.gov/isaveterans/civilmustersrch.jsp

…………..

Memphis, February 18, 1863.

Major-General GRANT,
Comdg. Department of the Tennessee:

GENERAL: I inclose herewith a communication from Brigadier-General Quinby* in relation to the matter of granting furloughs to enlisted men in extreme cases.

I shall commence embarking General Logan's DIVISION Friday morning, and hope to get off Saturday. The commissary and quartermaster's boat have been loaded for the last eight days, and are ready to haul out into the stream, so that there will be no detention on this account. The roads are in a most horrible condition, but the DIVISION will move in promptly, if it takes all the horses in the battery to haul a gun. General Quinby's DIVISION will follow Logan's as soon as transports can be provided. I have been annoyed beyond measure at the delay here, but could not help myself. The Ruth, which I had directed the quartermaster to stop here and carry a portion of my command, was permitted to go to Cairo for Government supplies, with a promise from the captain that he would be back by a certain day. As soon as got to Cairo she was taken possession of for a hospital boat and ordered to Saint Louis. . . .

JAS. B. McPHERSON.
OR V 24, Pt. 3, pp. 59/60