Lettres adressés au Capitaine Duvoisin

Letters addressed to Captain Duvoisin by Francisque-Michel on data collected for the publication of his book "Le Pays Basque, sa population, sa langue, ses moeurs, sa littérature et sa musique" (The Basque Country, its population, its tongue, its customs, its literature and its music). Answer to that letter from Captain Duvoisin