In 1964 the late Harvey Sacks began to present his now-famous lectures on conversation at UCLA (Sacks 1992, vol. 1). By the decade's end, as he continued his lectures at UC Irvine (Sacks 1992, vol. 2), the first published instance of the work that had come to be known as Conversation Analysis (Schegloff 1968) introduced this developing perspective to a broader public. In the early 1970s Sacks and Schegloff, along with their colleague Gail Jefferson, pursued their research on the organization of talk-in-interaction and published a number of articles that remain foundational (e.g. Schegloff & Sacks 1973, Sacks et al. 1974).