Friede also published about the post-Spanish history of Colombia and Peru; the Battle of Boyacá in 1819, the Battle of Ayacucho in 1824, the foundation of the Mint in Bogotá in the seventeenth century, the history of Pereira and Popayán, especially Juan del Valle y Caviedes, and the Colombian painters Carlos Correa and Luis Alberto Acuña. Juan Friede Alter wrote a critical review of friar Pedro Simón, and together with Benjamin Keen he published a major biography of friar Bartolomé de las Casas in 1971.