In 2007 English Heritage (now Historic England) commissioned research into the linkages between properties in its care and transatlantic slavery, to coincide with events to commemorate the bicentenary. A report produced by historian Miranda Kaufmann identified 26 properties with some level of connection to slavery or abolition. As a result, more detailed surveys of four sites - Bolsover Castle, Brodsworth Hall, Marble Hill and Northington Grange - were commissioned in 2008, and the findings presented at the 'Slavery and the British Country House: mapping the current research' conference in 2009. The conference was organised by English Heritage in partnership with the University of the West of England, the National Trust and the Economic History Society. Findings were later published in 'Slavery and the British Country House' (2013), edited by Madge Dresser and Andrew Hann. The publication and the 2008 reports are available to download from Historic England's website.