It was first published in 1981, under the direction of Eloy Fernández Clemente. In 1999, Prensa Diaria Aragonesa SA, the editor of the newspaper El Periódico de Aragón acquired the rights to the encyclopedia and published a new edition the following year, selling over 8,000 copies. They added an appendix in 2003. They began to scan the encyclopedia in 2002, and in September 2003 released version 1.0 of the On-Line Great Aragonese Encyclopedia. It is now offered free on the Internet due to the support of the Autonomous Community of Aragon.