For those that are following this thread, I managed to retrieve the majority of the FoxPro table data.
The method involved digging out an old machine which has Windows XP and Access 2003, then installing an ODBC driver VFPODBC.dll.
It was then possible to use the Get External Data - Import route.
In Files-of-Type, select the ODBC database then the Machine Data Source tab.
The Visual FoxPro option was then presented and the folder and dbf files could be accessed.
I don't believe that the FoxPro version (6) with which the files were created was actually marketed as "Visual", but as the data retrieval process was largely successful, it matters not.
Phil