Keywords: USS Helena (CA-75) underway c1961.jpg The U S Navy heavy cruiser USS Helena CA-75 at sea in 1961-62 following modernization with a new foremast supporting the very large antenna for the SPS-37A radar Official U S Navy photo http //www history navy mil/photos/images/h96000/h96900c htm NH 96900 from the U S Navy http //www history navy mil Naval History and Heritage Command ca 1961 USN PD-USGov-Military-Navy see at this http //www history navy mil/branches/org11-2 htm site all Pictures in the Online Library of Naval Historical Center are public domain USS Helena CA-75 |