Geography is the study of overall relationship, interconnection and correlation of natural and social components including processes on the Earth’s surface, which build regional structure and landscape image. The paper gives a condensed historical overview of the development of Slovenian geography. Scientific research activities, pedagogical organisation, prevailing ideology, international collaborations and publicity are chronologically presented following particular historical periods. This part of the paper focuses on the time between the end of World War I and the time when Slovenia became independent, characterised by the second and third generations of Slovenian geographers. The number of geographers increased, the diversity of their scientific work expanded, and their publicity rose. Except for thematic cartography, general cartography gradually became a domain of geodesy.