United States. (Hawaii - Great Britain). 1941. Registered Great Britain postal stationery envelope 5 1/2d bistre upgraded with SG 465, 2d orange tied by hooded 'Registered/ Newlands (Ross-On-Wye) rubber date stamp in violet, endorsed on reverse 'Buck & Bulgin, Wilton Court, Ross-On-Wye, Herefordshire/ via B.P.A. London' with London registration and framed '(Crown)/ Passed/ Per 34' in carmine and oval 'Passed By British Philatelic Assn. Ltd/ Consignment (1589) 3 Berners St. London' with consignment number, signature and date in m/s (4/4/41), addressed to 'Comm. G.C. Dyer, U.S. Navy, 'U.S.S. "Indianapolis", Fleet Post Office, Pearl Harbour, Hawaii', routed via Boston and San Francisco 'Ap 26' with bold double ring 'U.S.S. Indianapolis/ Registered/ May 5 194' on reverse.
On December 7 Indianapolis was leading Task Force 3 at Johnston Atoll during the Japanese attack on Pearl Harbour. The Indianapolis was absorbed into Task Force 12 and searched for the Japanese carriers responsible for the attack. On December 13 she returned to Pearl Harbour and joined Task Force 11.