Correspondents include: Sir Horace Hamilton [Chairman, Board of Customs and Excise] (16); John Davidson [Parliamentary Secretary, Admiralty] (2); James Grigg [Principal Private Secretary to the Chancellor of the Exchequer] (5); Pembroke Wicks (3); Sir William Graham-Harrison [Second Parliamentary Counsel to Treasury]; Ronald McNeill [later 1st Lord Cushendun, Financial Secretary, Treasury]; Lord Elveden [later 2nd Iveagh]; 17th Lord Derby; 6th Lord Carnarvon [earlier Lord Porchester].Also includes: betting duty statutory rules and orders, and notices by the Commissioners of Customs and Excise; newspaper cuttings; extracts from WSC's speeches.Subjects covered by the file include: sales of race horses; publicity surrounding the tax; betting duty offences; the totalisator; proposals by 2nd Lord Newton to legalise ready-money betting; the racing industry's views.