Commander William R. Sayles, United States Naval Attaché at Paris, to the Office of Naval Intelligence
<Cablegram, April 4, 1918.>
From: Naval Attache Paris
6039 French official figures tonnage sunk March first to March fifteenth inclusive<:> North sea, ten thousand one hundred eleven<;> channel twenty thousand seven hundred sixty-six<;> Atlantic sixty-six zero thirty-seven<;> Mediterranean fifty-eight zero sixty-six<;> total one hundred fifty-eight thousand nine hundred eighty-eight by submarine xxxx ten thousand two by mine. 18404.
Source Note: Cy, DNA, RG 45, Entry 517B. The date is handwritten but is confirmed by the date stamp just before the signature.