Family archives are a common element of the cultural-documentary heritage of all European countries. Public policies must manage programs of support, investment, recovery and diffusion of these archives, in cooperation with their owners. For 30 years, the Basque Government has been developing a program of these characteristics, to which it dedicates approximately € 450,000 each year. The elements that define this specific policy: (1) is a proactive policy, which has mapped these archives, located and identified them, and proposed a specific work program to their owners; (2) the objective is to order, describe and digitize them; (3) the archives are integrated into the website of the Archives System of the Basque Country (4 million digital images, 700,000 descriptions and 5.5 million sacramental records). This policy of promotion and investment, which is sustained over time, has been a success.