This work is a partial reproduction of the first Argentine map showing the outcome of the 1881 Boundary Treaty, as it appeared on 10 November 1881 in La Ilustración Argentina in Buenos Aires.
The Boundary Treaty of 1881 was signed in Santiago, Chile, on 29 July between Argentina and Chile, with the United States acting as mediator. It established the precise boundaries between Argentina and Chile throughout Patagonia, although it was not until 1899 that tensions ended and the border was definitively accepted by both parties.
On this map, which is heavily laden with propaganda, Argentina shows all of Chile's original claims in dotted red and the territory that ultimately became part of Chile in solid red. In this way, the map takes a stance in which Argentina retains most of the disputed territory, although it ignores the fact that Chile achieved its main objective, the Strait of Magellan.
Sources
Español 
English (UK)