European Union Referendum Bill

On a point of order, Sir Roger. At various times during this debate, there has been reference to a letter. I was somewhat puzzled because I did not seem to have been sent such a letter. But now, through access to Twitter, it seems I may have found it. What I now have is a letter from the Minister for Europe to various Members on the Conservative Benches—it can be described only as a letter begging for support. I am somewhat disappointed not to have received it, and to have been ruled out of providing such support. If we are debating amendments—this letter specifically gives Government assurances relating to those amendments—should this communications not have been available to all Members, and should it not now been placed immediately in the Library of the House?