- ColecciónMS 581 - Letters, valedictions, publications, speeches, etc.
- Unidad documental simple01a - Wilhelm Solf letters to family
- Unidad documental simple01b - Wilhelm Solf letters to family
- Unidad documental simple02 - Wilhelm Solf letters to family
- Unidad documental simple03 - Wilhelm Solf letters to family
- Unidad documental simple04 - Wilhelm Solf personal honours
- Unidad documental simple05a - Congratulations on 70th birthday of Wilhelm Solf
- Unidad documental simple05b - Congratulations on 70th birthday of Wilhelm Solf
- Unidad documental simple06a - Publications and speeches of Wilhelm Solf: Inaugural dissertation
- Unidad documental simple06b - Publications and speeches of Wilhelm Solf: Overview of the German consuls
- 5 more...