The paper describes the beginning of research on Slovak literature in Poland from the late of the 19th century to the year 1939. It presents the research by slavists Józef Gołąbek and Jan Magiera, who had their comparative articles published in Polish and Slovak periodicals. J. Magiera wrote a concise, synthesizing work titled Literatura czeska i słowacka (Czech and Slovak Literature, 1929). The paper deals carefully with the work of Władysław Bobek, who carried out research on Slovak literature in the 1930s most intensively. He continued on the previous positivist comparative research (Mickiewicz w literaturze słowackiej/Mickiewicz in Slovak literature, 1931), he mapped analogies between Polish and Slovak literatures written in the period of Romanticism, he outlined the issues of translation between the two related languages. He analysed Slovak literature written in the periods of Baroque, Neoclassicism and Romanticism and also commented on methodological issues of historical classification. He presented his own synthesis of Slovak literary history (Prehľadné dejiny slovenskej literatúry/General History of Slovak Literature, 1938). The works of all the three literary scientists form the basis of literary comparative science, translatology and literary history as a part of Slovak studies in Poland.