Northamptonshire Extensive Urban Survey
The Extensive Urban Survey project is part of a national programme of surveys of the archaeology, topography and historic buildings of England's historic towns and cities, supported by English Heritage [now Historic England].
Northamptonshire National Mapping Programme
The Northamptonshire NMP was started in 1994 and recorded over 14,000 archaeological sites from aerial photographs. The results of this project have been fully integrated into the HER. Various downloads and aerial photographs can be accessed via this link.