Sima N. Tomić (1866?-1903) is a memorable and somehow forgotten Figure from the Serbian cultural Past. He finished his Study at the Department of Historical Philology, at the High School, and elaborated his hilological knowledge in Saint- Petersburg, Moscow, Prague, Lajpcing and Vienna. He was a Teacher at the High School of Kragujevac, and at the First Belgrade Lycée, and Docent at the High School, where he was teaching Slavic Philology. He wrote Tractates about the Language, treated the Comparative Grammar, Slavic History and Macedonian Language. He collated a valuable material in the domain of Dialectology and Folk Art. The main Work of Sima N. Tomić is dedicated to Vuk S. Karadžić and Pavle Šafarik. He published important works in Periodicals of his time and edited the Bulletin «Nastavnik» («The Teacher»). He obliged the Librarianship with his tractate The National Library in Belgrade, published anonymously, which he wrote to call the attention of the Cultural Public on the importance and position of this most important Institution of Culture. After the too early death of Sima Tomić, in January 1903, his brother, Jovan, became Director of the National Library in Belgrade. Following brother’s Ideas and thanks to a great erudition and his great knowledge of Librarianship, Jovan Tomić succeeded, by his worthy ontribution, to raise the National Library in Belgrade to the level of Great European Libraries.