If you look at the portal page of the Hermann Hesse Page HHP, you will find a menu item on international editions which lists all licensed translations. There are quite a few Spanish books listed on pages 46-50. The file is in PDF (Adobe Acrobat Reader) format and you need to download the Reader if you do not already have it. The file is large so you may have to wait a little until it is displayed. For a (long) shortcut to the location use http://hesse.projects.ucsb.edu/projects/hesse/publications/uebersetzungen-sprache.pdf

I am Elizabeth Hesse Smith
I am looking to find more about this part of my family
SmithL1943@aol.com