Archives have traditionally served to researchers as sources of knowledge, seen with the perspective of the years, it has allowed them to know the past and make it known to the present and future generations. There is fortunately increasing more publications on recent history, supported by original documents. With this reality in mind, the purpose of this communication is to show the importance of the personal fonds as a source for recent history focusing on the background of one of the protagonists of Spanish political life during the period of the Transition from the dictatorship of the General Franco to the constitutional monarchy: Joaquín Garrigues Walker. In particular, the contribution that is offered is the finding aid of the personal fond of Joaquín Garrigues Walker, resulting from all this process, which includes map series of the Fund with its description. [ABSTRACT FROM AUTHOR]