OR, Series 1, Vol. 18, Page 825

Engineer Bureau
Richmond, January 7, 1863
Capt. E. T. D. Myers
Chief Engineer Piedmont Railroad, Danville, Va.
  Inclosed is sent authority from the Secretary of War recently granted for you to take possession of 50 per cent. of the unlaid iron belonging to the Western North Carolina Railroad, the Raleigh & Gaston Railroad, the Atlantic & North Carolina Railroad, and the Virginia Central Railroad; also authority to take possession of all the iron in the Clarksville and Keysville road {the Roanoke Valley Railroad}, the Port Walthall road {a branch of the Richmond & Petersburg Railroad}, and the York River road {the Richmond & York River Railroad} beyond the Pamunkey.
  I presume, captain, it is unnecessary to urge upon you the importance of appointing promptly energetic agents to secure this iron without delay. The enemy seems to be systematically threatening our great lines of communication, and your link may in consequence become one of vital consequence.
Very respectfully,
J. F. C. Gilmer
Colonel of Engineers and Chief of Bureau