This paper discusses four key geographical works published between the late 19th and early 20th centuries in the context of competing proposals about creating an “official national geography.” The analyzed corpus has been selected on the basis of its impact on Argentine geography, cartography, and nation-building. The works of Victor Martin De Moussy and Woodbine Parish were the first important geographical and statistical descriptions of the Confederación Argentina and the Provincia de Buenos Aires respectively. The work of Francisco Latzina built upon these two works and was the first to unite the country into its approximate territorial whole. In the early 20th century, the erudite scholarship and cartography of Carlos Urién were selected by the Ministry of Education to be used in primary schools and to fulfill the role of official geography. These four works stand out for their processual and geographic construction of the modern Argentine nation-state.