Parish books, including baptism, marriage and death registers, dating from 1900 to 1940 of the parishes that make up the Diocese of Huacho: the provinces of Sings, Huaral, Huaura, Barranca, Oyon and Cajatambo, north of Lima, and which have a population of over half a million inhabitants. The books were gathered between the year 2006 and 2007 under protection of episcopal decree of the year 2005.