If you access the link given by Forfarian in reply #11; put Haddo or Cauldhame in the main search field then put RHP [Register House Plan] in the reference field, you will get numbers & descriptions for all the plans/maps.
The maps/plans are not online but until a few years ago used to be able to be easily viewed at West Register House; things have changed. They can be digitised on request [10 days notice before visit required] & this digitisation viewed at General Register House, Princes Street.
From
http://catalogue.nrscotland.gov.uk/nrsonlinecatalogue/welcome.aspxImportant information on access to maps and plans (updated September 2012):Plan access requests should be directed to the Historical Search Room. You will normally be given access to the digital image of a plan in the Historical Search Room, rather than to the original record. For each request submitted only 6 individual plans or 1 bound set of plans (plan book) can be requested at once. Where a plan has not already been imaged, we will aim to make an image available in the Historical Search Room within ten working days of the request being accepted. In certain cases it may also be possible to view a plan remotely on the ScotlandsPlaces website. If we are unable to make a plan available in this way owing to its condition, or for technical, ownership or copyright reasons, it may be possible to inspect the original plan at the Plans facility at Thomas Thomson House, on a Wednesday morning or afternoon, by appointment with the Historical Search Room.Thomas Thompson House is in Sighthill.
http://www.nas.gov.uk/about/map2.aspDepending on the deposit conditions and condition of the document, if you view an original map at Thomas Thompson House, you MAY be able to photograph it or if this is not possible you can ask to trace it.
Josey
