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Showing 1 - 20 of 26 for search: 'Willem de Sitter', query time: 0.03s
Digital Object Unavailable
Date: 1918-03-07
Archival Call Number: 90-12
Document Type: Printed Document (PD)
    Digital object Available
    Date: 1972-01-01
    Archival Call Number: 20-529
    Document Type: Typed Document (TD)
      Digital Object Unavailable
      Date: 1931-02-09
      Archival Call Number: 91-33
      Document Type: Newspaper Clip (CLIP)
        Digital object Available
        Date: 1932-01-31
        Archival Call Number: 120-282
        Document Type: Newspaper Clip (CLIP)
          Digital object Available
          Date: 1972-05-05
          Archival Call Number: 20-519
          Document Type: Carbon/File Copy of Typed Letter (TLC)
            Digital object Available
            Date: 1972-04-14
            Archival Call Number: 20-518
            Document Type: Typed Letter Signed (TLS)
              Digital object Available
              Date: 1972-07-10
              Archival Call Number: 20-520
              Document Type: Typed Letter Signed (TLS)
                Digital object Available
                Date: 1972-03-28
                Archival Call Number: 20-517
                Document Type: Carbon/File Copy of Typed Letter (TLC)
                  Digital object Available
                  Date: 1974-10-11
                  Archival Call Number: 20-516
                  Document Type: Autograph Letter Signed, in Photocopy (ALSX)
                      Digital object Available
                      Date: 1920-10-14
                      Archival Call Number: 13-432
                      Document Type: Autograph Letter Signed (ALS)
                        Digital Object Unavailable
                        Date: 1972-01-01
                        Archival Call Number: 20-528
                        Document Type: Printed Text (REPT)
                          Digital object Available
                          Date: 1931-12-03
                          Archival Call Number: 5-258
                          Document Type: Transcript (TR)
                            Digital object Available
                            Date: 1917-01-01
                            Archival Call Number: 2-79.1
                            Document Type: Autograph draft of document (ADDftf)
                              Digital object Available
                              Date: 1952-09-18
                              Archival Call Number: 27-249
                              Document Type: Autograph Draft of Letter (ALF)
                                Digital object Available
                                Date: 1952-09-18
                                Archival Call Number: 99-343
                                Document Type: Typed Letter Signed (TLS)
                                  Digital object Available
                                  Date: 1954-03-02
                                  Archival Call Number: 27-290
                                  Document Type: Autograph Draft of Letter (ALF)
                                    Digital object Available
                                    Date: 1954-03-02
                                    Archival Call Number: 27-292
                                    Document Type: Typed Transcript of Letter (TTRL)
                                      Digital object Available
                                      Date: 1932-04-08
                                      Archival Call Number: 121-301
                                      Document Type: Printed Text, in Photocopy (REPTX)
                                        Digital object Available
                                        Date: 1947-03-31
                                        Archival Call Number: 14-72
                                        Document Type: Autograph Letter Signed, in Photocopy (ALSX)

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