Oskar Lange was born as the son of the Protestant textile manufacturer Arthur Julius Lange and his wife Sophie Albertine. Rosner was born on July 27, 1904 in Tomaszów Mazowiecki. His ancestors immigrated to Poland from Germany at the beginning of the 19th century. From 1918 to 1922 he attended the Philological Gymnasium there. The experience of the misery and mass unemployment after the First World War prompted him to become politically active at an early stage. He joined the Polish socialist movement and in 1920 founded a division of the "Association of Polish Socialist Youth" (ZPMS). After graduating from school in 1922, he left his hometown and studied economics, economic history and mathematical statistics, first at the Adam Mickiewicz University in Poznan and from 1923 at the Jagiellonian University in Krakow , where he received his doctorate in 1928 and then taught statistics. In 1932 he married Dr. Irene Oderfeld.
In 1934, thanks to a scholarship, he went first to London and later to New York City. 1938–1945 Lange was a professor at the University of Chicago . In 1944 he broke off cooperation with the legitimate Polish government- in- exile in London and now supported the Lublin Committee , a communist counter-government in Poland set up by the Soviet Union. In 1945 he became the ambassador of the People's Republic of Poland in Washington. In 1947 Lange returned to Poland.
1949–1956 he taught at the College of Planning and Statistics in Warsaw, where he was also rector from 1952–1955. 1955–1957 he was Deputy Chairman of the State Council of the People's Republic of Poland and 1957–1963 Chairman of the Economic Council at the Council of Ministers.
- Who is Who in Central and East-Europe 1933/34 Zurich 1935, quoted from: Beate Kosmala: Jews and Germans in the Polish House. Tomaszów Mazowiecki 1914–1939. Berlin 2001, p. 227.
- Beate Kosmala: Jews and Germans in the Polish house. Tomaszów Mazowiecki 1914–1939. Berlin 2001, p. 227.
- Zdzisław Sadowski: Economic Rationality in Oskar Lange from today's perspective. (PDF; 1.3 MB) Current information on the East, No. 1/2 2006, pp. 48–53,
- Literature by and about Oskar Lange in the catalog of the German National Library
- Biography in Encyclopædia Britannica (English)
- Biography in Concise Encyclopedia of Economics (English)
- Biography in New School for Social Research (English)
- Biography in International Institute of Social Studies of Erasmus University Rotterdam (English)
- Publications by and about Oskar Lange at Litdok East Central Europe / Herder Institute (Marburg)
|ALTERNATIVE NAMES||Lange, Oskar Ryszard (full name)|
|BRIEF DESCRIPTION||Polish economist and politician, member of the Sejm|
|DATE OF BIRTH||July 27, 1904|
|PLACE OF BIRTH||Tomaszów Mazowiecki|
|DATE OF DEATH||October 2, 1965|
|Place of death||London|