1. Einstein, Albert Creator: Kelen, Emery, 1896-1978. Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection View in finding aid: https://findingaids.princeton.edu/catalog/MC205_c00188_1
2. Subseries 4B: Published Portfolios,1922-1950 / Le Testament de Genève 10 Années de Coopération Internationale Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection
3. 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
4. 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
5. 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
6. Einstein, Albert Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection View in finding aid: https://findingaids.princeton.edu/catalog/MC205_c00188
7. Curie, Marie Collections: Derso and Kelen Collection MC205Treasures of the Graphic Arts Collection View in finding aid: https://findingaids.princeton.edu/catalog/MC205_c00142
