Marcel Bataillon is a notable instance of a scholar who found his line early and pursued it unremittingly. His Érasme et I'Espagne was published in 1937; a translation into Spanish appeared in 1950, with a second edition in 1966; but the original work has long been out of print and commonly unavailable. Thanks to Bataillon for ‘most important help’ were expressed in volume vii of P. S. Allen's Opus epistolarum Erasmi Roterodami, published in 1928, and again by Allen's widow in volume xi, published in 1947.