General Order, No. 7: The parole and countersign will go into effect at twilight and continue for twenty-four hours. Also, instructions for dealing with approaching parties and security. By order of Brig. Genl. Bonham, Signed: Geo. N. Lay, Head Quarters, Advances Forces, Army of the Potomac, Fairfax C.H., June 28, 1861 (Ms1992-003)