CCPBM - https://www.cultura.gob.es/cultura/areas/bibliotecas/mc/ccpb/que-es-ccpb.html
The Cortina method to learn spanish in twenty lessons : intended for self-study or for use in schools with a system of pronunciation based on english equivalents, for assuring a correct pronunciation
Libros
VIII, 400 p. ; 19 cm.
Fundación Lázaro Galdiano