by merger of the U.S. Revenue Cutter Service and the U.S. Life-Saving Service in 1915, the Revenue Cutter Service had been under the control of the U.S
(页面存档备份,存于互联网档案馆) - National Park Service "Springwood: Birthplace and Home to Franklin D. Roosevelt" (页面存档备份,存于互联网档案馆), a National Park Service Teaching with Historic
Historic Places Inventory—Nomination Form. National Park Service. [January 25, 2013]. Twain, Mark. Life on the Mississippi. Boston: James R. Osgood & Co. 1883