Published since 1965, this magazine is intended to present the works of analysis about the modern times of our country. It includes articles, sources and bibliographic reviews of both the 19th and 20th centuries. As for the topics, history of historiography has a relevant place since most collaborations are in this regard; secondly but not less important are these issues: political and diplomatic history of Mexico’s international affairs. The publishing council of this magazine is formed by prestigious researches. It is published every six months.