Maps, and Geographical Information
Home Counties Oxford Research Maps and geographical Information

Gazetteer of British Place Names Contains over 50,000 place names in Britain along with modern administrative areas information.
Counties Gazetteer Contains scanned images of historic Ordnance Survey maps dating from 1846 to 1899.
Oxfordshire  
Old Ordnance Survey Maps for England  
Oxford City Parish Map  
Oxford County Parish Map  
Oxfordshire Maps Multimap.com's excellent resource