In any case, the "Mouth of Iron" was published in Paris between October 1790 and 28 July 1791, at first, three times per week, then daily, beginning on 22 June 1791. The newsletter contained comments on "The Social Contract" of Jean-Jacques Rousseau, essays by Claude Fauchet, transcripts of speeches by Condorcet, petitions from the "Club of the Cordeliers", etc. A subscription cost thirty-six pounds (livres) per year, and anyone who subscribed was automatically made a member of the Social Club; so, since casual readers and curiosity-seekers were counted as members, the size of the club's membership was probably somewhat overstated.