- US US-IaGG MS/MS 01.120-19-19
- Bestanddeel
Part of Helena Percas de Ponseti Papers (1925-2011), 1960-2010
Reviews/comments, short biography, resume from 1998, a few photos and cards, materials related to GRISO (Grupo de Investigacion Siglo de Oro), Centro de Estudios Cervantes and Gran Enciclopedia Cervantina.