Although not widely known, Harold Garfinkel pioneered the use of ethnomethodology as a field of inquiry in sociology. He influenced generations of scholars and researchers. This expanded and updated edition of Garfinkel's classic Studies in Ethnomethodology includes, for the first time, additional Garfinkel papers that helped form the author's ideas. This is the fullest and most authoritative edition of Studies in Ethnomethodology ever published. It gives readers a chance to see how Garfinkel developed his path-breaking ideas and later expanded them into new lines of thought.