816.3 Pre P Prescott, William Hickling, 1796-1859 Prescott; unpublished letters to Gayangos in the library of the Hispanic Society of America. Edited with notes by Clara Louisa Penney. New York, Printed by order of the Trustees, 1927 xxi, 215 p. facsims., retratos. 17 cm. (Hispanic notes monographs. Catalogue series)