1. Die Um Den Dawes Plan Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection View in finding aid: https://findingaids.princeton.edu/catalog/MC205_c00679 Bookmark
2. Le Testament de Genève 10 Années de Coopération Internationale Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection View in finding aid: https://findingaids.princeton.edu/catalog/MC205_c00682 Bookmark
3. Indian Round Table Conference,1930-31 Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection View in finding aid: https://findingaids.princeton.edu/catalog/MC205_c00681 Bookmark
4. Einstein, Albert Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection View in finding aid: https://findingaids.princeton.edu/catalog/MC205_c00188 Bookmark
5. Curie, Marie Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection View in finding aid: https://findingaids.princeton.edu/catalog/MC205_c00142 Bookmark
