The 53 comedias sueltas in the Pedro Calderón de la Barca Collection of Gerth Archives and Special Collections at California State University Dominguez Hills (CSUDH) were a gift of Ludwig (Larry) and Frances Lauerhass in 2010. Frances was a professor of Foreign Languages at CSUDH for over 30 years. The Gerth Archives’ website is here. The Pedro Calderón de la Barca Collection finding aid can be found here and here. The collection has been cataloged according to best archival practice. The plays are housed in an individual folder within archival boxes.