You could try looking in the Tavistock Gazette. Copies are held at the Plymouth & West Devon Record Office. Use their online catalogue http://web.plymouth.gov.uk/archivescatalogue to see if they have the date you need. Put Tavistock Gazette in the search box. If you are unable to visit the Record Office to search you will need to get a researcher to look for you. A list is available from DFHS secretary : secretary@devonfhs.org.uk