List of Famous people who died at 89

Michael Potter was an American physician and immunologist. He won the Paul Ehrlich and Ludwig Darmstaedter Prize for outstanding contributions to medical research in 1983, and the Albert Lasker Award for Basic Medical Research in 1984, for "his fundamental research in the genetics of immunoglobulin molecules and for paving the way for the development of hybridomas and monoclonal antibodies".

Walter Hans Schottky was a German physicist who played a major early role in developing the theory of electron and ion emission phenomena, invented the screen-grid vacuum tube in 1915 while working at Siemens, co-invented the ribbon microphone and ribbon loudspeaker along with Dr. Erwin Gerlach in 1924 and later made many significant contributions in the areas of semiconductor devices, technical physics and technology.

Piero Schlesinger was an Italian jurist, banker, lawyer and academic who served as president of the Banca Popolare di Milano from 1971 to 1993.

Aldo Ciccolini was an Italian pianist.

Allen Harold "Al" Neuharth was an American businessman, author, and columnist born in Eureka, South Dakota. He was the founder of USA Today, The Freedom Forum, and its Newseum.