Office of the Chief of Naval Operations to Vice Admiral William S. Sims, Commander, United States Naval Forces Operating in European Waters
CABLEGRAM RECEIVED Dec 13, 1917
From: Opnav, Washington Ser No. 1557
1557. Your 3039. This matter considered serious. Army embarkation service and commander cruiser force informed no more cargo or animal ships received in troop convoy whatever their speed unless manned throughout by Naval personnel. Army embarkation services are forwarding copies of your cable to General Pershing requesting him to investigate and take such action against master of LUCKENBAC
K<H> as he considers circumstances warrant. Our secret service directed to investigate matter this side. 15012.
Source Note: Cy, DNA, RG 45, Entry 517B.