6 (15.2 cm) gun on USS Newark (C-1). An inclined-recoil mounting, possibly Mark 3 Central Pivot. Library of Congress Photograph ID LC-D4-20655
6″ (15.2 cm) gun on USS Newark (C-1). An inclined-recoil mounting, possibly Mark 3 Central Pivot. Detroit Publishing Company Collection Photograph. Library of Congress Photograph ID LC-D4-20655.