In the Journal Étranger, December, 1761, appeared an anonymous review of Lessing's Miss Sara Sampson which, since the middle of the last century, has been the subject of recurrent conjectures. Discussion has confined itself for the most part to the question whether or not this review was written by Diderot, to whom, in turn, it has been categorically assigned, tentatively imputed, categorically denied, and re-imputed. However, although the question has attracted, more or less incidentally, the attention of various prominent critics, no one, as far as I have been able to determine, has undertaken to investigate the available evidence. Following is a brief bibliographical survey of the discussion.