ALS, DNA WR RG 107, Presidential Telegrams, I, 167. See Lincoln's order of August 21, 1864. Butler telegraphed on September 13, 1864: ``I am informed that Mr Ames of Falls Village Conn has some wrought iron rifle guns of great strength & penetration which have commended themselves to your notes [notice] & that you have ordered some to be made. We need one (1) or two (2) guns of great power & penetration to use against the enemys iron clad on the James. Please permit me to order one (1) or two (2) to be rifled & forwarded here. . . .'' (DLC-RTL).
 Lincoln probably refers to the Dutch Gap Canal being built on the James River. No reply to the question has been found.