7 3/4 x 3 1/4, imprinted form, filled out in ink.
City of Washington, July 3, 1865. To Mr. David Perkins. Sir: You are hereby ordered to attend a Company Muster on Monday the 6th day of July, at K St. Bet.[ween] 13 & 14, at 10 o'clock A.M. By order of Lt. Comdg. Benton Crosby, Company E, 5th Reg't Militia D.C. Frank A. Wilson, Orderly Sergeant. Light age toning and wear.
These District of Columbia Militia units were organized to defend the Capital during the Civil War.