 He wrote works on the life of Juan Manuel de Rosas and the Argentine Confederation, which earned him intellectual prestige and good sales income, and the favor of being considered as part of the Buenos Aires intellectual elite.In 1881 he published the first version of what in 1888 would be his master work, the "Historia de la Confederación Argentina".With ingenuity, he dedicated it to Mitre and sent it to him for consideration.