The roll clearly states it is for Captain Frederick G. Stiles company of the "Fifty fourth Regt Mass Militia" and is dated September 30th, 1862.
Signed by Stiles and Lt. M. Elder of the 11th US Infantry, who would be mortally wounded at Gettysburg is nine months.
Worthy of further research, the 42nd was a nine month regiment who served in Louisiana. In very good condition with wear as shown.
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