Gavrilo VitkovićGavrilo Vitković was an engineer, historian, professor and collector of old manuscripts. He was a member of the Serbian Learned Society.BiographyAfter graduating from the University of Budapest, Vitković worked as an engineer in Smederevo and Šabac. Later, he taught engineering in secondary schools in Kragujevac and Belgrade. And in his spare time he collected original documents and manuscripts mostly about 18th- and 19th- century people from Serbia and granted his collection to the National Library of Serbia.