Up until 1911, the mandolin family of instruments as known in the United States had no true bass member
इसवी सनाच्या १९व्या शतकात युरोपीय लेखकांच्या मते सुमात्रात राहणार्‍या लोकांना आपल्याच बेटाचे नाव माहिती नव्हते.