I may not have quite reached the time to break out the champagne but after 5 and 1/2 years of researching and writing, I completed the manuscript of my biography of Korzybski tonight.
Jacques Barzun has said that "When the first draft is done, the back of the book will be broken."
This qualifies as at least a second, not the first draft since every chapter has gone through revision and rewriting already. However, now I can look at the book as a whole, and editing each part in relation to that whole will now lead to a new phase of revision, etc. Whatever obstacles lie ahead, I really do feel that I've reached a milestone. 'The back of the book' is indeed broken.