[source: regimental letters book]
[see letters received, #9, for the letter requesting this explanation]
Head Quarters 91st Reg. Pa. Vols.
Camp near Beverly Ford Va. Aug 13th 1863
Captain A. S. Marvin
Asst. Adjt. Genl.
Captain
I have the honor to state that the delay in conforming to the directions contained in Special Order No. 79 this morning is that no Signal from Brigade Head Quarters was heard Between Reveille and a Signal sounded at ten (10) minutes before nine (9) which we understood to indicate the call for guard mounting. I immediately ordered the call to be made and when your note requiring an explanation was received the Guard was mounted.
I am Captain
Very Respectfully
Your Obedient Servant
Joseph H. Sinex
Lieut Col. Commdg.