The InteLex electronic edition of The Collected Letters of W. B. Yeats contains, complete, the three volumes of The Collected Letters which have appeared in print. In addition, the collection includes all of the letters from the remaining eleven (unpublished) volumes, with dating information (so far as this is known), but lacking the full annotation for which the printed volumes are justly famous. Scholars will therefore have immediate access to the primary texts of the complete edition even while the final editing and annotation for the greater part of it remains in progress. A total of 7,378 new letters are featured in the database. Of these, 88 are newly discovered letters belonging to the 1865-1904 period covered by the three published volumes. The remaining 7,290 letters belong to the 1905-1939 period which will be published in print and with full annotation in future volumes of the edition. Particular note should be made of the fact that the unannotated letters have not received final vetting (which will occur only as they are annotated prior to print publication) and are therefore published here in beta form. Some errors of transcription and of dating may therefore remain within this beta group of letters …