Copy letter from Herbert Rix, to Mr Collings 'Herewith I send you a document relating to [James Alfred] wing & [Helen Gertrude] Klaassen's "Phil. Trans." ['Philosophical Transactions of the Royal Society'] paper. With the figures marked "litho. [lithograph] plate" you have nothing to do. For the twenty-five woodcuts I should be glad of an estimate at your earliest convenience. Take careful note of the instructions as to reduction, &c, and return the document to me with your estimate'. 18 July 1893