property maps of Lancaster city – even a document bearing the signature of President James Buchanan. One thing we found was a large box of old aerial photos, tightly rolled up and heavily damaged.

In order to obtain a highly accurate map of human-made features ... the orthophotos were compared with 50-year-old photos taken by a Cold War-era spy satellite declassified in 2013. That gave ...

were used for the map More than half a million aerial images of historical sites in England have been used for a new mapping tool. Photographs and 3D laser scans have been taken over the past 30 ...

Historic England Archive A view of the ... Explorer allows users to search and explore an online map showing aerial photographs of England over the past 100 years, allowing people to compare ...