Postcard from Jacobus H. van 't Hoff (1852-1911) to his friend and colleague, Georg Bredig (1868-1944), in which van't Hoff express his opinion on the work of their colleague. He humorously refers to himself as the famous Dutch painter, Rembrandt van Rijn (1606-1669).

Van't Hoff is considered to be one of the founding fathers of physical chemistry. In 1901 van’t Hoff received the first Nobel prize in Chemistry “in recognition of the extraordinary services he has rendered by the discovery of the laws of chemical dynamics and osmotic pressure in solutions.” Around 1894, Georg Bredig completed a portion of his post-doctoral work in van’t Hoff’s laboratory in Amsterdam.