The research guide La Primera Guerra Mundial en los Archivos Estatales [The First World War in the State Archives] has been created by the Spanish Centro de Información Documental de Archivos in cooperation with the Archivo Histórico Nacional (AHN, Madrid), the Archivo General de la Administración (AGA, Alcalá de Henares), the Centro Documental de la Memoria Histórica (CDMH, Salamanca) and the Archivo General de Palacio in Madrid, the Spanish royal archives. During the First World War Spain remained a neutral country. The guide opens with a section on the period 1895-1914 during which Spain lost wars in the Philippines and Morocco. The second section looks at Spain’s role during the war as a neutral country, providing for example humanitarian aid. There are sections for events, institutions and journals, and for persons. In the section Fuentes documentales you are guided to selected archival series in four state archives, and there is a bibliography. This research guide can be viewed only in Spanish.