Ezequiel Martínez Estrada was an Argentine writer, poet, essayist, and literary critic. An admired biographer and critic, he was often political in his writings, and was a confirmed anti-Peronist. While in his middle years he was identified with the ideas of Nietzsche or Kafka, in his last years he was closely identified with the Cuban revolution and Fidel Castro.

Ramona Victoria Epifanía Rufina Ocampo was an Argentine writer and intellectual. Best known as an advocate for others and as publisher of the literary magazine Sur, she was also a writer and critic in her own right and one of the most prominent South American women of her time. Her sister was Silvina Ocampo, also a writer. She was nominated for the 1970 Nobel Prize in Literature.