Thực đơn
USS_Helena_(CL-50)Thực đơn
USS_Helena_(CL-50)Liên quan
USS Hanson (DD-832) USS Hardhead (SS-365) USS Hornet (CV-12) USS Houston (CA-30) USS Halibut (SS-232) USS Haddock (SS-231) USS Hornet (CV-8) USS Hawkbill (SS-366) USS Hancock (CV-19) USS Helm (DD-388)Tài liệu tham khảo
WikiPedia: USS_Helena_(CL-50) http://books.google.com/books?id=53l3ebkpCjcC http://www.history.navy.mil/danfs/h4/helena-ii.htm http://www.uboat.net/allies/warships/ship/2574.htm... //tools.wmflabs.org/geohack/geohack.php?language=v...