In 1826 Juan Manuel de Luca was appointed Postmaster General by the Rivadavia government, under the oversight of an enlarged commission. Despite the demise of that government, and the civil war, the postal service was only minorly inconvenienced and Luca remained at his post until 1858 when he resigned because of his age and health. It was under Luca that detailed regulations were developed; concessions, vehicles, routes, and frequencies set.