Correspondence regarding the clean air campaign, her husband's work towards this, causes of cancer (diesel fumes and air pollution), her own position as an author and historian not a medical professional, "Defume" speech by her husband. Attached is Lady Fergusson Hannay's letter to the Daily Telegraph "Tobacco or Diesel" (this refers to her husbands work and Percy Stock's figures on lung cancer in rural and urban areas). Pybus drafts replies regarding his own work and Sir Walter Fergusson Hannay's work and use of it in the aim for clean air (this is drafted on the back of a National Geographic Subscription). An obituary for Fergusson Hannay in "Vital Statistics" is available. Pybus' replies also suggest he is making progress with the campaign locally, he also mentions his correspondence with Vauxhall regarding an exhaust filter. A later letter from Fergusson Hannay shows Pybus sent her a paper which she suggests he should send to Gerald [Watson?] M.P. and Rupert Spier M.P. (Spier is linked to noise pollution), her husband was chair of the Noise Abatement Society. Lady Fergusson Hannay goes into detail about her husbands death, her own personal situation and experiences, including how her dog reacts to living in London.

Letter from Pybus regarding a letter to the Daily Telegraph and the Newcastle Evening Chronicle, Pybus requests a copy of Hill's booklet and also suggests where he could send this to. Pybus also says he is done trying to deal with allotment fires.

Letters have newspaper clippings attached concerning the publicity for Clean Air Campaign and who is involved regionally, particularly in the media and local press. Lewis is based in Whitley Bay and has connections with the Councillors there. Lewis also recommends replies to articles in national newspapers which he encloses. Included in the file is a invitation from the Whitley Bay Afternoon Towns Women's Guild to talk on Clean Air sent on by Lewis.

Letters concerning approaches for material, in receipt of papers, letters to journals concerning Pybus' cancer research on animals, detailed account of cancer papers and letters, circulation, - clean air bill cause of cancer letter, receipt of reprints, Letter to BMJ about loss of medical professionals to the war and educational reform (1916) full version of cancer and atmospheric pollution paper, proof reading, response to Pybus' 'causes of cancer' car exhaust issue - no device to filter the gases, some responses to journals sent on to Pybus.

Correspondence to M.Ps and prominent members of society concerning the “Clean Air Act” and atmospheric pollution, usually Pybus provides the recipient with details of his career, research, and reprints of “Cancer and its Cause” and/or “Fumifugian”. He also mentions the work on British natives that have emigrated to South Africa and New Zealand and have been diagnosed with lung cancers. Tables from research are available. Includes some unreadable signatures and some have multiple letters to and from. 1963 – Mr. Rodgers 1963 - Mr. Wilson 1967 – John Hall 1967 – Arthur Blenkinsop 1967 – Dame Irene – this includes a letter regarding the Abortion law and Pybus’ opinion 1967 – R. W. Elliot 1967 – Bob Edwards (amending Clean Air Act) 1966 – Lord Wynne-Jones 1961 – Dr Hill 1961 – L. A. Pavitt 1961 – K.F. Munn 1961 – Prime Minister 1961 – Irwin 1961 – Frank F. Main (several receipt letters) 1961 – Dr Main 1961 – Ministry of Health 1961 – Dr Godber 1970 – Dr Griffiths 1972/1973 – Mr. Heath (extensive letter including notes) 1965 (Questions and Answers from House of Commons – Mr. John Hall / Mr Anthony Crosland regarding air pollution) 1967 – M. Hall 1970 – Christopher Chataway 1965 – John Hall (extensive notes and letters) 1959 – Fergus Montgomery 1956 – Mr. Turton 1955 – G. F. Davies 1958/1959 – Harry Randall – this letter concerns a visit from Randall and his wife 1966 – Quentin Hogg 1964 – Mr. P. Belcher (newspaper clipping “Bulgaria finds tobacco with no nicotine” – notes with this) 1963 – Lord Francis-Williams 1959 – Lord Hailsham 1959 – B. Laughland 1969 – Lord Douglas of Barloch (includes correspondence, and information on Fluoridation of Public Water Supply) 1968 – Robert Maxwell 1955 – Gerald Nabarro 1963 – Harold Wilson

Correspondence regarding loaning "Cancer and Atmospheric Pollution" and asks if Mr. Spiers intends to take the matter further. Mr. Spiers replies saying he is not interested enough to accept the loan and he wouldn’t be able to pursue the efforts for clean air.

Letters regarding Pybus' article in the Newcastle Journal about lung cancer. Danford explains her own situation and includes a cutting of a draft excluder she has used and replaced in her home which has no open fires. Pybus sends a response in sympathy with her situation.

Correspondence regarding Pybus' interest in Stocks' work on benzpyrene (which was sent to Pybus via Dr James Grant, Medical Officer of Health, Gateshead). Pybus requests Stocks' figures and asks about further research. Stocks' replies with more information about his work and explains he is busy with several jobs. Pybus replies to this with his opinion and also sends a reprint of "Cancer and Atmospheric Pollution".

Correspondence regarding papers on cancer and atmospheric pollution, experiments carried out by Pybus concerning leukaemia, Knox, replies with his opinion on the causes of cancer. Pybus replies to this letter. Enclosed is a paper by Professor Knox.

Correspondence regarding the deposit with Newcastle University and how this has been set up to Pybus' standards, Gibson does inquire about duplicates.