Autograph drafts. There are usually one or more substantially complete drafts of each chapter, interspersed with further revised and interpolated leaves interrupting and adding to the leaves numbered in pencil by Lee.
Typewritten or word-processed drafts. Many leaves are drafted several times, with autograph amendments and then photocopied, with further autograph amendments, or re-typed incorporating the amendments, which are then subject to further amendment, copying and re-typing. Each of the volumes Add MS...