Drawing on drafts and other material from the Harvey Sacks archive this paper examines the development of one of the defining papers of Conversation Analysis, A Simplest Systematics for the Organization of Turn-Taking for Conversation (Sacks, Schegloff, and Jefferson 1974). The discussion examines four drafts of the paper along with correspondence between the authors and with William Bright, the editor of the journal Language where it was to be published. The four drafts trace the development of the paper from a 13-page draft to the final 106-page final draft submitted to the journal. By exploring the drafts as they evolved the discussion highlights the development of the central ideas in the paper, the distinctive style of the paper as it is revised, the changes of authorship, and the role of the editor of Language, William Bright, in helping to shape the paper through his own detailed reviews.