Conductors. 6 letters and cards sent to Vienna. 1910-1973. Available: Karl Böhm (1894-1981). Three eigh. Letters / postcards and 1 postcard m. U. "Karl". With three eifh. Envelopes with sender "Dr. K. To his niece Lilo. Mentioned several times concerts. - Franz Mannstaedt (1852-1932). 1 eigh. Picture postcard (1912) in the U.S. "Franz Mannstaedt". To the writer Oscar Maurus Fontana in Vienna. The map shows the rather ugly Raspstraße in "Alt-Munich", to which Mannstaedt ironically notes: "Which city would have such a real street?" - Felix Weingartner (1863-1942). Masch. Letter m. U. "Weingartner" and letterhead "Staatsoper". Vienna 3.V.1935. - To Dr. Anton Perger in Vienna. "... I remember your father very well, I have spent beautiful and stimulating hours with him ... I think it is absolutely wrong to bring Beethoven's life on stage, and I could not indirectly help such an opera to be realized ...".