This letter to his mother Jane from the linen merchant John McCaldin Loewenthal was likely mailed from Buenos Aires, but written during JMcC’s voyage on the SS Magdalena. It includes some first-hand descriptions of unrest connected to the Brazilian revolutions of the late 19th Century. The date on the letter is 15th September 1893. A transcript is available at https://loewenthal.pressbooks.com/chapter/ss-magdalena_15-september1893/