USS St. Louis (C-20)
 The fourth USS St. Louis Cruiser No. 20 (C-20) was the lead ship of her class of protected cruisers in the United States Navy. St. Louis was launched on 6 May 1905 by Neafie & Levy Company Philadelphia Pennsylvania. It was sponsored by Miss Gladys Bryant Smith and commissioned on 18 August 1906 with Captain Nathaniel R. Usher in command.