1937 Death Walter Mittelholzer, Swiss aviation pioneer, dies in crash at 43 1929 Event Walter Mittelholzer flies as 1st about the Kilimanjaro 1925 Event Walter Mittelholzer is 1st to flies over Demawend mountain, Iran 1923 Event Walter Mittelholzer flies Junkers F-13 to Spitsbergen/Oostland 1894 Birthday Walter Mittelholzer, Swiss aviation pioneer, Swiss Air
