The Livorno State Archives were instituted in 1941, inheriting the documentary sources of the Historic Archives of the City, open to the public since 1889. Particularly interesting are the papers of the Harbour Office in the free port of Livorno. The documents concerning port traffic and health certificates (Archives of the "Magistrature, then Department of Health") contain information on the arrival of ocean-going ships. Especially interesting are the archives of the Associated Hospitals, to which were sent the documents, dating from the middle of the 13th to the early 20th century, from suppressed hospitals and institutions, such as Sant'Antonio and Santa Barbara, Santissima Annunziata and San Ranieri. Equally interesting are the records of the Deputation on Aqueducts, established in 1826 to administer the work of Grand Duke Leopold’s project for the Colognole aqueduct. Note that several documents on Livorno and its province, Piombino in particular, are to be found in the State Archives of Florence and of Pisa.