Kazimierz Władysław Bartel was a Polish mathematician, freemason, scholar, diplomat and politician who served as 15th, 17th and 19th Prime Minister of Poland three times between 1926 and 1930 and the Senator of Poland from 1937 until the outbreak of World War II.
Kazimierz Bartel
Prime Minister Kazimierz Bartel, 1928
Bartel (right) with Marshal of the Sejm Ignacy Daszyński, 1929
Bartel's fifth cabinet, December 1929. In center: Józef Piłsudski and Ignacy Mościcki.
The May Coup was a coup d'état carried out in Poland by Marshal Józef Piłsudski from 12 to 14 May 1926. The attack of Piłsudski's supporters on government forces resulted in an overthrow of the democratically-elected government of President Stanisław Wojciechowski and Prime Minister Wincenty Witos and caused hundreds of fatalities. A new government was installed, headed by Kazimierz Bartel. Ignacy Mościcki became president. Piłsudski remained the dominant politician in Poland until his death in 1935.
Józef Piłsudski and other coup leaders on Poniatowski Bridge in Warsaw.
Piłsudski (center) on Poniatowski Bridge, Warsaw, 12 May 1926, during the May Coup. At right is General Gustaw Orlicz-Dreszer.