The addressee must be Minnie Evaline Leslie. She was an American citizen, the daughter of businessman Alexander Leslie and his wife Minnie Blanche Inglis. The family lived in Sao Paulo for many years.
She married British merchant Robert Williamson ( the postcard sender's signature looks like an abbreviated Williamson!) at St Paul's Church in Sao Paulo on 28 August 1911. He was the son of William Fraser Williamson and his wife Helen Renton Williamson. Witnesses Alexander Leslie, William Baillie Fraser Williamson and Eleanor Leslie.
Alexander Leslie died in Ocean City, New Jersey on 25 November 1915 and was buried in his home town of Philadelphia, at West Laurel Hill cemetery.
