| Bowhill, Selkirkshire | Drawings | | Drawings of proposed addition to Dalkeith House. |
| National Archives of Scotland (formerly SRO) | Gifts and deposits | GD 224/337/4 | GD 224/379/7. 'Accounts and legal papers relating to claim by John Adam, Architect, as representing his late father, William Adam, Architect, against the representatives of the late Francis, [2nd] Duke of Buccleuch, for payment for building a bridge, stables and other offices at Dalkeith "and for other works performed there' etc |
| National Archives of Scotland (formerly SRO) | Gifts and deposits | GD 224/625/1 | Work by Smith |
| National Archives of Scotland (formerly SRO) | Gifts and deposits | GD224/669/36 | Plans, working drawings by Atkinson. |
| National Archives of Scotland (formerly SRO) | Gifts and deposits | GD 224/1085/1 | Record of Craig dining at Dalkeith House in January and February 1776. |
| National Archives of Scotland (formerly SRO) | Register House Plans | RHP 14446 | |
| National Monuments Record of Scotland/NMRS, RCAHMS | NMRS Photographic Archive | | Copies of drawings held in Buccleuch Collections at Bowhill.- |
| Scottish National Gallery | Print Room drawings | | Drawing signed by Robert Adam and dated 1791. |
| Soane Museum | Soane Museum Collection | li, 62 | Drawing of gates, signed by James Adam and dated 1794. Soane portfolio of Playfair work has drawings of bow window. |