[1910-1911, a crucial biennium in the history of the Asociación Española de Urología (I). How our association was born].

Although the background and major details concerning the events that in 1911 culminated with the creation of the Spanish Association of Urology are well known as they have been published earlier in several papers, until now and as far as we know, no paper had presented the dates and particulars of the preparatory and constituent meetings of the Society, the first Regulations, and the semblance and biographies of the project's main inspirators and initiators. This article, prepared with abundant material from newspapers and literature of the period, extricated from the resources of the National Library and the archives of the Royal Academy of Medicine in Madrid, uncovers some unpublished data on the foundation and its advocates, and rediscovers other that although published in journals at the beginning of the century, remained forgotten or were unknown for most urologists. In this way, we complete the history of a part of our past, perhaps the most interesting one, and that of its main players.