USS Trenton (CL-11)
She spent most of her pre-war career moving between the Atlantic and the Pacific. Trenton joined the Special Service Squadron in 1934, for a good-will tour of Latin America. In May 1939, she would join Squadron 40-T in protecting American interests during the Spanish Civil War and not return to the US until July 1940, when she carried the royal family of Luxembourg, fleeing from the Nazi occupation of their country.
http://en.wikipedia.org/wiki/USS_Trenton_(CL-11)