Correspondence regarding various different medical methods "Silver method" relating to ovaries, artificial menopause, checking specimens, specific patients, animal operations, cadaver experiments (injury of the semi-lunar cartilages), references in books and articles to conditions, links to the Ministry of Health and Research Council.

Correspondence regarding various different medical methods, possibly including cancer based treatment; work on specific patients, asking for contributions on mammary cysts, proposed experiments on electrical anaesthesia, advice on plastic surgeons and new equipment - thoracoscope.

Correspondence on Paget's disease and gastro-enterostomy and the retrograde jejuno-gastric intussusception (Pybus suffered with this).

Mainly addressed to Walter and Charles Edward Trevelyan about the Wansbeck, North British and Central Northumberland Railways. Correspondents include Alfred Carr, Charles D Forster, Thomas Gow, Albert Grey, R H Huntley, William Ridley, John F Tone and Benjamin Woodman.

Folder of correspondence between Northern Stage and Newcastle College regarding the joint production 'Heaven & Hell' (2005); Erica Whyman's participation in the college's Quality Assurance Agency Review (2006); Northern Stage's contribution to a module in the Foundation Degree in Acting (2006). Also includes a programme for the collaborative production 'Not What I Had In Mind' (2006) and a letter thanking Erica Whyman for speaking at the college's graduation ceremonies (2007 and 2011).

Correspondence relating to professional subscriptions and responsibilities (e.g. regarding membership of the British Centre of the International Theatre Institute and the Independent Theatre Council, annual entry in British Performing Arts Yearbook, or deposit of playscripts of new plays in British Library).

Correspondence accepting articles to publish, particularly from the British Medical Journal, and people seeking permission to use Pybus' findings and observations.

Pointing other professionals to findings, gaining information for papers and sending out reprints.

Asking for reprints, Imperial Cancer Research Fund submissions, request for papers, returning borrowed papers

Correspondence with manufacturers, university and council regarding promotional pavement graphics (non-slip stickers for pavements) for Northern Stage production of Hansel & Gretel, including samples.