Here are a selection of websites, recommended by Heritage Lincolnshire, which you may find useful when conducting further research about Harlaxton Manor.
Heritage Gateway http://www.heritagegateway.org.uk/Gateway
National Heritage List for England. Tip: carry out an advanced search, set map area and view the results on a map. Click the ? button for further detail.
Lincs to the Past http://www.lincstothepast.com
Operated by Lincolnshire County Council, lists items held in the Lincolnshire Archives, of particular interest in the Pearson Gregory Collection.
Cambridge University Aerial Photograph Collection
Able to view photographs by browsing a map, there are some of Harlaxton that can be viewed but you have to pay to download. Here is a starting point: http://www.cambridgeairphotos.com/location/fp51/
Britain from Above http://www.britainfromabove.org.uk
No shots of Harlaxton but interesting aerial views of Grantham. Register to gain access to higher resolution.
British Museum http://www.britishmuseum.org/research/collection_online
Portable Antiquities Scheme website http://finds.org.uk
National Trust Collections http://www.nationaltrustcollections.org.uk
Some interesting photographs of houses in the village.
Historic England https://historicengland.org.uk/listing/the-list/
Tip: use the map search tool under the search box.
Buildings at risk register http://risk.historicengland.org.uk/register.aspx
Tip: search or download the East Midlands list.
Historic England Photograph Database
Includes some interesting shots of the Manor and village.
National Library of Scotland Historic Maps http://maps.nls.uk
Database of historic maps with an interesting View side by side feature allowing you to compare old maps with modern satellite imagery.
Google Scholar, a Search engine for finding academic articles. http://scholar.google.co.uk
British History Online, primary and secondary sources but not many relating specifically to the Manor http://www.british-history.ac.uk/Default.aspx
The above list was compiled from a “How to find history on your doorstep” event presented by Ian Marshman, Heritage Lincolnshire, 29 February 2016.
Archaeology Data Service http://archaeologydataservice.ac.uk
This record is of interest:
Probable Prehistoric or Roman enclosure and boundary ditches seen as cropmarks. http://archaeologydataservice.ac.uk/archsearch/record.jsf?titleId=1299764