This will assuredly be the definitive edition of Emily Dickinson's poems for scholars. It is the result of fifty years concentrated work and contains all 1775 poems, drawn from many sources, including parts of letters. Where available the variant readings are critically compared with known manuscripts, and notations indicate her own preferences. The arrangement, based often on interior evidence, such as handwriting, is relatively chronological. There is considerable introductory material showing the poet at work, what is know about her creative processes, the facts and suppositions about the various influences in her emotional and literary development. There is, too, a section on the editing of the poems, from the discovery after her death of the mass of her writing, through the contributions made, in editing the material according to successive eras in literary taste. The current editor presents the basic tenets of procedure in completing the present text.