In late 2003, immediately after the publication in that year’s Architectural History of my article, ‘Teamwork or Masterwork?’, which discussed the issue of the ‘authorship’ of the Royal Festival Hall (RFH) design, a large, carefully-wrapped roll of drawings of early schemes for the RFH was discovered at the Matthew family house, Keith Marischal, East Lothian; together with the remainder of the archival material at the house, it has now been passed to Edinburgh University Library (Special Collections Department). As set out in this short postscript, they shed an important new light on the arguments put forward in the earlier article, whose text and footnotes should be consulted at the appropriate points, to obviate the need for repetition in this piece.