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Showing 1 - 20 of 48 for search: 'Willem de Sitter', query time: 0.04s
Digital object Available
Date: 1917-04-14
Archival Call Number: 36-573
Document Type: Transcript (TR)
    Digital object Available
    Date: 1916-06-22
    Archival Call Number: 20-531
    Document Type: Autograph Letter Signed, in Photocopy (ALSX)
      Digital object Available
      Date: 1916-07-15
      Archival Call Number: 20-534
      Document Type: Autograph Letter Signed, in Photocopy (ALSX)
        Digital object Available
        Date: 1916-11-04
        Archival Call Number: 20-539
        Document Type: Autograph Letter Signed, in Photocopy (ALSX)
          Digital object Available
          Date: 1917-01-23
          Archival Call Number: 20-540
          Document Type: Autograph Postcard Signed, in Photocopy (AKSX)
            Digital object Available
            Date: 1917-02-02
            Archival Call Number: 20-541
            Document Type: Autograph Postcard Signed, in Photocopy (AKSX)
              Digital object Available
              Date: 1917-01-01
              Archival Call Number: 20-542
              Document Type: Autograph Letter Signed, in Photocopy (ALSX)
                Digital object Available
                Date: 1917-03-20
                Archival Call Number: 20-546
                Document Type: Typed Transcript of Letter (TTRL)
                  Digital object Available
                  Date: 1917-03-24
                  Archival Call Number: 20-547
                  Document Type: Autograph Letter Signed, in Photocopy (ALSX)
                    Digital object Available
                    Date: 1917-04-02
                    Archival Call Number: 20-550
                    Document Type: Autograph Postcard Signed, in Photocopy (AKSX)
                      Digital object Available
                      Date: 1917-04-14
                      Archival Call Number: 20-553
                      Document Type: Autograph Postcard Signed, in Photocopy (AKSX)
                        Digital object Available
                        Date: 1917-06-14
                        Archival Call Number: 20-556
                        Document Type: Autograph Letter Signed, in Photocopy (ALSX)
                          Digital object Available
                          Date: 1917-06-22
                          Archival Call Number: 20-559
                          Document Type: Autograph Letter Signed, in Photocopy (ALSX)
                            Digital object Available
                            Date: 1917-06-28
                            Archival Call Number: 20-560
                            Document Type: Autograph Letter Signed, in Photocopy (ALSX)
                              Digital object Available
                              Date: 1917-07-31
                              Archival Call Number: 20-561
                              Document Type: Autograph Postcard Signed, in Photocopy (AKSX)
                                Digital object Available
                                Date: 1917-08-08
                                Archival Call Number: 20-562
                                Document Type: Autograph Postcard Signed, in Photocopy (AKSX)
                                  Digital object Available
                                  Date: 1917-07-22
                                  Archival Call Number: 20-564
                                  Document Type: Autograph Postcard Signed, in Photocopy (AKSX)
                                    Digital object Available
                                    Date: 1918-04-15
                                    Archival Call Number: 20-568
                                    Document Type: Autograph Postcard Signed, in Photocopy (AKSX)
                                      Digital object Available
                                      Date: 1933-04-05
                                      Archival Call Number: 20-575
                                      Document Type: Autograph Letter Signed, in Photocopy (ALSX)
                                        Digital object Available
                                        Date: 1933-04-05
                                        Archival Call Number: 20-576
                                        Document Type: Typed Transcript of Letter (TTRL)

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