Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters, to the Office of the Chief of Naval Operations
Cablegram sent Feb. 16, 1918 MJK
Opnav Washington 4049
[G8?] COS 21 ADR VERY SECRET
4049. My 3069. The matter of proclamation defining mine fields is still under consideration. British Government thinks one months warning ample and expects to issue proclamation about second week of March. 22516.
Source Note: Cy, DNA, RG 45, Entry 517B.