| New York, The Museum of Modern Art | | |
| Gustav Zimpel | Wien 1904 - 1957 Wien | |
| Univ. Prof. Dr. Walther Kastner | Gmunden 1902 - 1994 Wien | |
| Josef Sticha | Tschestitz, Böhmen 1822 - 1902 Wien | |
| Linz, OÖ. Landes-Kultur GmbH | | |
| Louis Meyers | Pittsburgh | |
| Karl Jatsch | ca. 1820 - ca. 1899 | |
| Ludwig Eduard Ullrich | geb. 18.12.1900 in Wien | |
| Galerie Gerda Bassenge, Berlin | | |
| London, Christie's | | |
| Christie´s London | | |
| Galerie 3 Plus 2 | Paris | |
| Abby J. Gruenwald | USA | |
| Alzueta Gallery | Barcelona | |
| William H. Schab Gallery | New York, 1939 - 2016 | |
| Swann Auction Galleries | gegründet 1941 in New York | |
| Heinrich Rieger | Sereď (Sereth an der Waag) 1868 - 1942 Ghetto Theresienstadt | |
| Benno Moser | Sulzbach am Inn 1898 - 1988 Wien | |
| Antiquariat Michael Steinbach | | |
| Michael Steinbach Sr. | Wien 1917 - 2005 Wien | |
| Washington, National Gallery of Art | | |
| Otto Kallir | Wien 1894 - 1978 New York | |
| H. Schein & Co. | Wien | |
| Frankfurter Kunstkabinett | Frankfurt, 1947 - 2016 | |
