Large-format originals are often the most fragile items in a collection: rolled, folded and handled for centuries. Plans are unrolled and flattened with care before they are scanned.
For Boughton House in Northamptonshire we scanned the park plans of around 1705 and restored their colours, so clearly that the variety of each tree can be told. Scanned plans can go on to become digital maps through map and estate digitising.