Crawford’s History (Google Books ⧉, Amazon ⧉, Bookshop ⧉)

The Travels of Marco Polo

As regards the treasure, Sumatra was long famous for its produce of gold. The export is estimated in Crawford’s History at 35,530 ounces; but no doubt it was much more when the native states were in a condition of greater wealth and civilisation, as they undoubtedly were some centuries ago.