Keywords: Oluf Nicolai Olsen.jpg Oluf Nicolai Olsen 1794-1848 Danish officer and cartographer http //www kb dk/PortraetRegT/PortraetShowImg do ID 68750 IMGID 20641 1901 Martin Kristensen Oluf Nicolai Olsen Files from The Portrait Collection of the Danish Royal Library PD-Denmark50 PD-1923 |