See below image for printed text of letter (Click here for downloadable pdf):
Georgetown, Delaware
March 1st, 1869
To the
Adjutant General
Washington D.C.
Sir:
I have the
honor to acknowledge the receipt of my
commission of Major by Brevet of U.S.
volunteers, bearing date of May the 30th
1866.
I am, Sir,
Very respectfully
Your able servt.
Dagworthy D. Joseph
Late Capt. Co. C 3 Reg. Delaware
Vol. Infantry