Hertz first came to prominence conducting Wagner at the Metropolitan Opera in New York . Some of the performances he conducted were experimentally recorded by the Met 's librarian Lionel Mapleson on what are now known as the Mapleson Cylinders and later issued on LP . He first came to San Francisco as a conductor of the Metropolitan Opera during its 1906 tour and was present when the city was devastated by earthquake and fire
earthquake and fire
1906 San Francisco earthquake
Alfred Hertz