Polish geologist, Dr. Stanisław Krajewski (1890-1968), studied geology and geography at the Jan Kazimierz University of Lwów (Lviv) and geology at the University of Lausanne under the guidance of Professor Maurice Lugeon. He participated in World War I as a Polish Legion soldier. After the war, Stanisław Krajewski worked as a petroleum geologist at Borysław (Boryslav), which was the major petroleum mining center in the Polish Carpathians. He also conducted research on the geological structure of the Flysch Carpathians in terms ofprospecting for crude oil and natural gas occurrences. In 1931, Stanisław Krajewski was employed at the Polish Geological Institute (PGI) in Warsaw for editing and publishing jobs, while not abandoning seasonal geological investigations in the Carpathians, which he continued until the outbreak of World War II in 1939 and later during the wartime. In 1945, he returned to work as a publishing editor at the PGI, and participated in the post-war reorganization of the Polish geology. In the period of 1951-1961, Stanisław Krajewski was a lecturer at the Faculty of Geology, University of Warsaw. In 1953, he became the Editorin-Chief of the newly formed Wydawnictwa Geologiczne, in which he worked until his death, dealing with the history and popularization ofgeological sciences.