| Description | Including correspondence and papers relating to assay data, publication, Dore House colliery, and general research on gold and silver; the correspondents include Donald McDonald, of Messrs. Johnson, Matthey and Company Limited, London, A. H. Westwood, Assay Master, at Birmingham Assay Office, J. B. Himsworth, Sheffield antiquary, J. S. Forbes of the London Assay Office, and Walter Minchinton, of the University College of Swansea. |