Keywords: G.F. Ursin by Carl Simonsen.jpg en Georg Frederik Friderich Krüger Ursin 1797-1849 Danish mathematician and astronomer Litograph posthumous from an 1836 painting by C W Eckersberg Royal Library Copenhagen Carl Simonsen 1828-1902 circa 1850 Georg Frederik Ursin Files from The Portrait Collection of the Danish Royal Library Carl Simonsen Christoffer Wilhelm Eckersberg PD-old-100 |