| 4271 | 5483 | Nederlands Openluchtmuseum Arnhem | Windmolens van Nederlands [Windmills of The Netherlands] | 1961 | B/24.2 | Hollan |
| 4274 | 5153 | C Norberg-Schulz | Late Baroque & Rococo architecture | 1980 | B/01.0 | Norber |
| 4275 | 5387 | Nordiska Museet | A guide to Nordiska Museet Stockholm | 1969 | M/08 | Sweden |
| 4276 | 5466 | Norsk Folkmuseum | Norwegian Folkmuseum : a guide to the open air museum | 1968 | M/08 | Norway |
| 4277 | 13857 | North Hayling PCC | St.Peter's church, North Hayling | ? | B/26.2 | Hants/ |
| 4278 | 4795 | North Marden PCC | North Marden, Sussex | ? | B/26.2 | Sussex |
| 4279 | 4796 | North Stoke PCC | North Stoke church | ? | B/26.2 | Sussex |
| 4280 | 4993 | Northern Ireland Public Record Office | 18th century Ulster emigration to North America | 1972 | E/66.8 | Northe |
| 4281 | 4852 | Northiam PCC | St. Mary's church, Northiam | ? | B/26.2 | Sussex |
| 4283 | 3934 | Helen Northumberland | Albury Park | 1956 | B/22 | Surrey |
| 4284 | 7369 | Raymond Notley | Carnival glass | 1983 | E/33.8 | Notley |
| 4285 | 5533 | Otakar Novy | Town and country development in Czechoslovakia | 1983 | B/02.5 | Novy, |
| 4287 | 4211 | Nurse & Co | C Nurse & Co's price list | | WCP | Nurse |
| 4288 | 2310 | O'Brien Thomas & Co Ltd | Mayfair heating stoves | 1947 | WCP | O'Brie |
| 4289 | 6609 | Martin O'Connell | Research volume of the Surrey Archaeological Society No.5 : historic towns in Surrey | 1977 | E/15 | Surrey |
| 4291 | 6604 | M O'Connell | Petters Sports Field, Egham : excavation of a late bronze age/early iron age site | 1986 | E/61.4 | O'Conn |
| 4294 | 3948 | E Russell Oakley | Illustrated guide to, and short history of the Priory Church, Christchurch, Hampshire, England | 1945 | B/26.2 | Hampsh |
| 4295 | 1402 | K P Oakley et al | A survey of the prehistory of the Farnham district (Surrey) | 1939 | E/61.0 | Oakley |
| 4297 | 7547 | Obo | OBO it! | ? | B/05.4 | Obo |
| 4298 | 7045 | Odhams Press Ltd | The home workshop | ? | E/33.0 | Odhams |
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