Secretary of the Navy Josephus Daniels to All Navy
Copy of Alnav #6.
2 February 1917.
Six Alnav Sigcode Confidential. In view present international situation take every possible precaution to protect government plants and vessels Acknowledge. 20002.
Source Note: Cy, DNA, RG 45, Entry 517B. The order is typed on “Office of Naval Operations” stationery. “Radiogram” is handwritten at the top of the order.