Treaty of Bayonne between France and Spain sets their international borders
The long standing disagreement between France and Spain over their mountainous international boundaries comes to an end with the signing of the Treaty of Bayonne. A complex system of reciprocal local arrangements on things like the grazing of cattle and the payment of national taxes will develop in the border areas and will exist into the twentieth century. (By John Osborne)
The American Almanac and Repository of Useful Knowledge for the Year 1858 (Boston: Crosby, Nichols, and Company, 1857), 368.