| RHP3182 | 'Copy of an old map in the parish chest at Croyland', part of southern Lincolnshire | 18th century-19th century |
| RHP3189 | Map of Lincolnshire: [19th cent.] | 19th century |
| RHP3190 | Map of Lincolnshire: [19th cent.] | 19th century |
| RHP3191 | Map of Linconshire (similar to RHP 3190) | 19th century |
| RHP3192 | Map of Grantham - Corby district of Linconshire: | 1806 |
| RHP3195/1-2 | Maps (2) of the county of Lincoln: 1805. | 1805 |
| RHP3196/1-4 | Maps (4) of Stamford, Grantham, Lincoln and Great Grimsby showing parliamentary and municipal boundaries, with Commissioners' reports on the boroughs annexed to each: 1868. | 1868 |
| RHP3867 | Plan of the great estuary called the Wash from which it is proposed to recover 150,000 acres of valuable land: [1840]. | [1840] |
| RHP6979 | Admiralty chart of coast from Blakeney to Flamborough Head | 1893 |
| RHP14606 | Map of the county of Lincoln: 1827-28, published in 1831 (Vignette of Lincoln Cathedral) | 1827-1828 |
| RHP20659 | Map (6 sheets) of the county of Lincoln: 1827-28, published in 1830. (Vignette of Lincoln Cathedral) | 1827-1828 |
| RHP23149 | Chart of the River Humber; dedicated to Trinity House of Kingston upon Hull. | 1778 |
| RHP37900 | Sketch map showing the course of the rivers Witham, Welland and Glen, and their junction at The Wash. | 1834 |
| RHP38366 | Geological Survey map (sheet LXXXVI) of River Humber and North Lincolnshire. | 1906 |
| RHP38368 | Ordnance Survey 1 inch map marked to show Midland and Great Northern Joint Railway and competing bus routes. | 1923 |
| RHP93728-93730 | 1. Architectural plans, elevations and section of a pair of labourers' cottages, as built on estate of Rt Hon R A Christopher, 1850: 1854
2. Related specification (RHP93730/2) | 1850-1854 |
| RHP93731-93732 | 1. Architectural plan, elevation and section of labourer's cottages at Claxby, as built on estate of Rt Hon R A Christopher, 1847: 1854
2. Related specification (RHP93732/2) | 1847-1854 |
| RHP93735-93737 | Architectural plans and elevations (various designs) for a pair of one-storey cottages at [Claxby] as proposed by the Agricultural Labourers Improvement Association | [1854] |
| RHP93738-93740 | 1. Architectural plans, elevations and section (different designs) for a pair of two-storey cottages at [Claxby] as proposed by the Agricultural Labourers Improvement Association: [1854]
2. Related letter, 7 December 1854 (RHP93740) | [1854] |
| RHP140855 | Plan of Lincoln railway bridge, Great Northern Railway | nd |