| RHP1647/1 | Chart of Sveaborg, Sheet II showing sections of the Works on Vargon: [c.1850] | [c.1850] |
| RHP1647/2 | Chart of Sveaborg. Sheet IV showing elevations of the works on Gustafsvard, Vargon and Langorn: [c.1850] | [c.1850] |
| RHP1647/3 | Chart of Sveaborg, sheet III showing sections of the works on Stora Oster Svarto, Lilla Oster Svarto, Wester Svarto, Gustafsvard and Langorn: [c.1850] | [c.1850] |
| RHP1647/4 | Chart of the Fortress of Sveaborg, sheet I: [c.1850] | [c.1850] |
| RHP12194 | Admiralty plan of Helsingfors (Helsinki), Sveaborg and the adjacent sea, Finland | 1854 |
| RHP12218 | Pictorial sketch of a bay at Helsingfors (Helsinki), Finland | [19th century] |
| RHP22361/1 | Map of Norway, Sweden and Finland | c 1748 |
| RHP72654 | Paper making machine No. 110 for Hammaran & Company, Tammerfors: Plan and elevation. | 1890 |