National Steel Guitar
The Reso-Phonic guitar was invented in the mid-1920′s for playing Hawaiian and Jazz music. They are also perfect for blues and especially slide guitar. (Notice the wonderful art deco design.) John Dopyera invented and made the instrument (as well as the Dobro) in Los Angeles.
When the electric guitar was invented in the 1930s the National Steel guitar fell out of favor. The company was revived in the 1980s…and the new instruments are in some ways even better than the old ones. (see Links Section) The sound is made by a thin aluminum cone which projects the sound of the strings of the Resorocket and gives the instrument its distinctive sound.