| RHP3 | Plans of Eglinton Estate | 1789-1790 |
| RHP3/89 | Plan of Little Cumbrae (Cumbray) No 11 | 1789 |
| RHP451 | Architectural drawings of property in Glasgow Street, Millport, Great Cumbrae | Nov 1912 |
| RHP451/1 | Elevations of property in Glasgow Street, Millport, Great Cumbrae | Nov 1912 |
| RHP451/2 | Plans of property in Glasgow Street, Millport, Great Cumbrae | Nov 1912 |
| RHP451/3 | Plan, elevation and section of property in Glasgow Street, Millport, Great Cumbrae | Nov 1912 |
| RHP3666/1-2 | Plans of the Earl of Glasgow's unentailed lands [at Millport] on the island of Meikle Cumbrae, Bute | 1809 |
| RHP5211 | Bound plan and section of work at Millport Pier. | 1902 |
| RHP5689 | 1. Bound plans and section of the piers at Millport and Keppel. 2. Book of Reference thereto. | 1904 |
| RHP13056 | Tracing plan of Millport Harbour: 1891. | 1891 |
| RHP13057 | Tracing plan of Millport Harbour and Steamboat Pier: 1891. | 1891 |
| RHP13386 | Plans (2) of proposed addition to pier at Millport: 1859. | 1859 |
| RHP13387 | Plan of harbour at Millport, showing proposed improvements: [late 19th century]. | [late 19th century]. |
| RHP13388 | Plan of Millport pier and harbour: 1897. | 1897 |
| RHP13389 | Plan of Millport harbour and piers: 1904. | 1904 |
| RHP13403 | Photographs (3) of Millport inner harbour and pier: 1904. | 1904 |
| RHP14107 | Photostat copy of volume of plans, being a survey of the Isle of Bute, the patrimonial estate of the Earl of Bute, including the island of Inchmarnock and part of Great Cumbrae Island: (Original plans drawn on parchment)
The photocopies in RHP 14107 are of, as follows:-
1. Description of the Isle of Bute.
2-3. Description and plan of North and South Kellsbog, Glen Callum, North Garrochty, Kinnygaven and Branzet.
4-5. Description and plan of South Garrochty and Dunagoil.
6-7. Description and plan of Lubas and Largizean.
8-9. Description and plan of the "Buts" on Kilchattan Bay.
10-11. Description and plan of Meikle Kilchattan.
12-13. Description and plan of Little Kilchattan and Kirymenoch Mckirdy.
14. Plan of Bruchag and Kerrytonlia.
15. Plan of Kerrylamont.
16-17. Description and plan of Mountstuart park and gardens.
18-19. Description and plan of Mountstuart Newfarm.
20-21. Description and plan of Scoulag, North and South Kerrycroy, Ascog and Kerrycrusach.
22-23. Description and plan of Langalcorad, Quochag, Langalbuinoch and Culevine.
24-25. Description and plan off Quochag Moor Buts and Drumreoch.
26-27. Description and plan of Stravanan, Kerrymenoch Stuart, Gallachan, Ardnahoe and Birgidale Crieff.
28-29. Description and plan of Ambrismore and Ardnahoe.
30-31. Description and plan of Birgidale Knock and Barnauld. 32-33. Description and plan of Grenach and Lochly.
34-35. Descripton and plan of the burgh lands on the south side of Rothesay and of Roseland, Windyhall and Townhead.
36-37. Description and plan of the burgh lands on the east side of Rothesay.
38. Plan of the town of Rothesay.
39-40. Description and plan of the burgh lands on the north and west side of Rothesay and of Cnocanriach, Hillhead and Redivoil. 41-42. Description and plan of Quien and Barmore.
43-44. Description and plan of Glenchromy, Chapelton, Balilone and Craigbiorach.
45-46. Description and plan of Scalpsie, Ardscalpsie, Mecknoch and Little Kilmory.
47-48. Description and plan of Barone Park, Barone and Eskchraggan.
49-50. Description and plan of Meikle Kilmory , Kerryfearn, Cuagach and Ballycurry.
51-52. Description and plan of Upper and Nether Ardroscadale. 53-54. Description and plan of Ballanlay, Ballycaul, Achantirie, Greenan and Dunalant.
55-56. Description and plan of North and South Leargivrechtan, Creslagvourity and Dunalant.
57-58. Description and plan of Little and Meikle Etterick and Kilbride.
59-60. Description and plan of Drumachloy.
61-62. Description and plan of Kildavanan, Scarrel, Butleachen and Lenihall.
63-64. Description and plan of Achavoulig and High and Laigh Glenmore.
65-66. Description and plan of Glecknabae and Lenihuline.
67-68. Description and plan of Kilmichael.
69-70. Description and plan of Balnakailly.
71-72. Description and plan of Rudhbodach and Tawney.
73-74. Description and plan of Bullochreg and Shalunt.
75-76. Description and plan of Culnashambrug and Stuck.
77-78. Description and plan of Ardmaleish.
79-80. Description and plan of Inchmarnock.
81. Description of Great Cumbrae and of Nether Kirkton and Mid Kirkton, being the south-west part of the island.
82. Plan of Nether Kirkton and Mid Kirkton, in Great Cumbrae. 83-84. Description and plan of Upper Kirkton and Breckoch, in Great Cumbrae. | 1758-1759 |
| RHP23107 | Sketch plan of marches between Figgatoch and Bellaquon and between Bellaquon and Portrye (Portry). | [Late 18th century] |
| RHP23900 | Photocopy of plan of island of Cumbrae (Combray), the property of the Earl of Glasgow.. (Vignettes of ships and of arms of Earl of Glasgow) | 1828 |
| RHP34110 | Admiralty chart of Lochgilp, Millport and East Loch Tarbert. | 1893 |
| RHP35801/1-11 | Set of plans showing the farms and lands composing the barony of Southenan (Southenan) with keys to their contents.
1. Plan of the whole barony, (including Little Cumbrae), showing the positions of its constituent farms.
2. Plan of North Southannan (Southenan North) (Vignette of North Southenan farm-buildings)
3. Plan of Southannan Mains (Mains of Southenan) (Vignette of farm-buildings)
4. Plan of Underbank Farm (Vignette of Underbank House and avenue)
5. Plan of Kaim (Kaimes) Hill
6. Plan of Fence-Foot Farm (Vignette of farm-buildings)
7. Plan of Glenside Farm (Vignette of farm-buildings)
8. Plan of Poteath Farm (Vignette of farm-house) [C.f. RHP 35795 above]
9. Plan of Biglees (Biglies) Farm (Vignette of ruins of Biglies farm-house)
10. Plan of North Kilruskin (Vignette of farm-buildings)
11. Plan of Whinhill, Burngill and Liagh Kilruskin (Vignette of Whinhill farm-buildings) | 1788-1791 |
| RHP36932 | Ordnance Survey 1/2500 plan marked to show proposed extension of Millport Pier (Caledonian Railway). | 1905 |
| RHP38050 | Plan of Millport, Cumbrae, Bute | April 1779 |
| RHP41849 | Ordnance Survey 1/2500 plan (Buteshire, sheet CCXVI.9) marked to show site of proposed extension to cemetery near Mid Kirkton: 29 | 29 November 1929 |
| RHP41850 | Ordnance Survey. 6 inch plan (Buteshire, sheet CCXVI) marked to show site of proposed extension to cemetery near Mid Kirkton | 29 November 1929 |
| RHP46763 | Ordnance Survey 6 inch plan (Butershire, sheet CCXVI) marked to show various lands of Great Cumbrae proposed to be feued by Earl of Glasgow | 1872 |
| RHP78835 | Ordnance Survey 6 inch plan (Buteshire, sheet CCXVI.NW) marked to show farm boundaries | [1944-1955] |
| RHP78836 | Ordnance Survey 6 inch plan (Buteshire, sheet CCXVI.SW & SE) marked to show farm boundaries | [1944-1955] |
| RHP78838 | Ordnance Survey 6 inch plan (Buteshire, sheets CCXXVIII.NW & SW) marked to show farm boundaries | [1944-1955] |