| 4168 | 4364 | compiled by R A Muntz | Some ancient interests of Fotheringhay | ? | B/26 | Fother |
| 4169 | 2287 | H Munzing | Catalogue & price list of brass & iron goods & tools (+ discounts booklet) | | WCP | Munzin |
| 4170 | 7932 | G Murphy | Founders of the National Trust | 1987 | E/51 | Nation |
| 4171 | 5150 | P Murray | Renaissance architecture | 1978 | B/01.0 | Murray |
| 4173 | 112 | Clifford Musgrave | The Sussex book | 1957 | E/15 | Sussex |
| 4175 | 3954 | Clifford Musgrave | Arundel Castle : ancestral home of the Dukes of Norfolk for 500 years | 1970 | B/27 | Arunde |
| 4177 | 3753 | Stefan Muthesius | The English terraced house | 1982 | B/22 | Muthes |
| 4178 | 15543 | Myson Heat Exchangers Ltd | The Myson Envoy Super Range of Fan Convectors | | WCP | Myson |
| 4181 | 278 | Ian Nairn and Nikolaus Pevsner | The buildings of England : Sussex | 1965 | B/01.0 | Pevsne |
| 4183 | 150 | Ian Nairn, Nikolaus Pevsner, and Bridget Cherry | The buildings of England : Surrey | 1971 | B/01.0 | Pevsne |
| 4184 | 718 | G J Nash | The new builders' handbook : No.3 : plumbing & hot-water fitting | 1946 | WCP | Nash, |
| 4185 | 8263 | Judy Nash | Thatchers and thatching | 1991 | B/05.62 | Nash, |
| 4186 | 5181 | W G Nash | Brickwork repair and restoration | 1986 | B/10.3 | Nash, |
| 4187 | 5344 | W G Nash | Brickwork repair and restoration | 1986 | B/10.3 | Nash, |
| 4188 | 1067 | National Association of Parish Councils | Annual report & accounts Sussex Association of Parish Councils | 1969/70 | E/42 | Nation |
| 4189 | 6561 | National Association of Plumbing Teachers | Teaching & plumbing | 1988 | WCP | Nation |
| 4194 | 5460 | National Museum of Wales | Farmhouses and cottages in Wales | 1962 | B/22 | Wales/ |
| 4195 | 5429 | National Museum of Wales | Welsh Folk Museum St Fagans : handbook | 1971 | M/08 | Wales/ |
| 4196 | 7635 | National Pig Breeders' Association | Large whites | ? | E/17.34 | Nation |
| 4197 | 2289 | National Radiator Co | Ideal radiators Ideal boilers : salesman's manual | | WCP | Nation |
|
|
