Joseph Friedrich August Darbès

Portrait of the Mathematician Leonard Euler Joseph Friedrich August Darbes

Portrait of Magnus Johann von Bock (?-1808), 1780 Joseph Friedrich August Darbès

Portrait of Euphrosine Katharina von Bock, geb. von Stackelberg, 1780 Joseph Friedrich August Darbès

Portrait of Princess Yekaterina Ivanovna Cherkasova, née Hedvig Elisabeth von Biron, 1781 Joseph Friedrich August Darbès

Portrait of the Mathematican Leonhard Euler,, German painting of 18th century Joseph Friedrich August Darbes