Ludwig van Beethoven | Ludwig Maximilian University of Munich | Ludwig I of Bavaria | Ludwig Wittgenstein | Ludwig Leichhardt | Ludwig Tieck | Ludwig Boltzmann | Ludwig | Christa Ludwig | Ludwig Mies van der Rohe | Ludwig II of Bavaria | Ludwig Guttmann | Ludwig Feuerbach | Ludwig von Mises | Ludwig Senfl | Ludwig Institute for Cancer Research | Ludwig Bemelmans | Robi Ludwig | Ludwig Uhland | Ludwig Traube | Ludwig-Musser | Ludwig Hohlwein | Karl-Ludwig Kratz | Friedrich Ludwig Jahn | Ernst Ludwig Kirchner | Ernst Ludwig Gerber | Ludwig Streicher | Ludwig Scotty | Ludwig Satz | Ludwig Rellstab |
Together with Lehár as composer, Ludwig Herzer as co-author and Richard Tauber as singer he produced the operettas Friederike (Frederica) (1928), Das Land des Lächelns (The Land of Smiles) (1929) and, with Paul Knepler as co-author, Giuditta (1934).