This paper presents a list of meetings between Wittgenstein and Sraffa during the period 1929-1951. It was compiled using Sraffa's notes from his pocket diaries and including supplement appointments noted by Wittgenstein. The information - like addresses or names of other speakers - added by Sraffa to some appointments have been here explained in the footnotes. As it is shown, it emerges by the list that the meetings between Wittgenstein and Sraffa can be divided in several different periods.