A summary of which newspapers are available on the British Newspaper Archive, that may have articles about Mitcham.
It can be useful to browse the newspapers if a general date for a story is known, as sometimes the digitisation hasn’t worked properly, and so can’t be found in a search. When clicking on a newspaper link below, click on the year range offered and that will take you to the search page for that period in that newspaper. Then you can home in on the date required.
County Chronicle, Surrey Herald and Weekly Advertiser for Kent
Croydon Advertiser and East Surrey Reporter
Croydon Chronicle and East Surrey Advertiser
Croydon Guardian and Surrey County Gazette
Hants and Berks Gazette and Middlesex and Surrey Journal
South London Times and Lambeth Observer
Surrey Herald and County Advertiser
Surrey Independent and Wimbledon Mercury
Wallington & Carshalton Herald