- Authors, German--20th century--Correspondence (31)
- Rilke, Rainer Maria, 1875-1926--Correspondence (9)
- Authors, Austrian--20th century--Correspondence (3)
- Hofmannsthal, Hugo von, 1874-1929--Correspondence (3)
- Goll, Claire, 1891-1977--Correspondence (2)
- Jahn, Hans Henny, 1894-1959--Correspondence (2)
- Jung, Franz, 1888-1963--Correspondence (2)
- Kappus, Franz Xaver, 1883-1966--Correspondence (2)
- Thurn und Taxis, Marie, Princess, 1855-1934 (2)
- Tucholsky, Kurt, 1890-1935--Correspondence (2)
- Adorno, Gretel, 1902-1993--Correspondence (1)
- Andreas-Salomé, Lou, 1861-1937--Correspondence (1)
- Art in literature--Germany--History--20th century (1)
- Authors, French--20th century--Correspondence (1)
- Authors, German--20th century--Iconography (1)
- Balthus, 1908---Correspondence (1)
- Benjamin, Walter, 1892-1940--Correspondence (1)
- Benn, Gottfried, 1886-1956--Correspondence (1)
- Borchardt, Rudolf, 1877-1945--Correspondence (1)
- Carossa, Hans, 1878-1956--Correspondence (1)
- Cats in art (1)
- Fritz, Gottlieb, 1873-1934 (1)
- Fürnberg, Louis--Correspondence (1)
- Goll, Yvan, 1891-1950--Correspondence (1)
- Hesse, Hermann, 1877-1962--Correspondence (1)
- Johnson, Uwe, 1934- --Correspondence (1)
- Kassner, Rudolf, 1873-1959--Correspondence (1)
- Kästner, Erich, 1899-1974--Correspondence (1)
- Kästner, Ida, 1871-1951 (1)
- Ludwig, Paula--Correspondence (1)
- Mann, Erika, 1905-1969--Correspondence (1)
- Morgenstern, Christian,--1871-1914--Correspondence (1)
- Müller, Hedwig, 1892?-1971 (1)
- Publishers and publishing--Correspondence (1)
- Rilke, Rainer Maria, 1875-1926--Journeys--Soviet Union (1)
- Rilke, Rainer Maria, 1875-1926--Knowledge--Art (1)
- Rilke, Rainer Maria, 1875-1926. Correspondence (1)
- Soviet Union--Description and travel--1917-1944 (1)
- Stramm, August, 1874-1915--Correspondence (1)
- Tucholsky, Kurt, 1890-1935--Iconography (1)
- Walden, Herwarth, 1878-1941--Correspondence (1)
- Walden, Nell--Correspondence (1)
- Wildgans, Anton, 1881-1932--Correspondence (1)
- Wolff, Kurt, 1887-1963 (1)
- Zweig, Arnold, 1887-1968--Correspondence (1)