| MURPHY (M) & SHOUKRY (I) | Egypt: The Rural Postal Service, An Introduction [2010] | N/A |
| MURRAY (G Douglas) | 2000 postmarks of Prince Edward Island 1814 to 1995 [1996] | N/A |
| MURRAY-BROWN (D A R) | Norfolk Island cancellations and postal markings [1974] | N/A |
| MUYS (Cornelis) | Westphalia & the Grand Duchy of Berg: as a connecting link in postal communications between Russia and Prussia to Holland and France 1790 to 1814 [2000] | France, Germany, Military, Napoleon, Netherlands |
| NAIRN (Gerald) | Overland mail via the Syro-Iraqi Great Desert, 1990 (Collins, N) | N/A |
| NARATH (Albert) | Beitrage zur stempelkunde von Guatemala, Vol 1 Die nummernstempel; Vol. 2 – Die stummenstempel [1952] | N/A |
| NARATH (Albert) | Die nummern-zierstempel der departmentos von Uruguay [1961] | N/A |
| NARJOUX (J L) | La Telegraphe en France 1791 – 1881 [1982] | France, Telegraph |
| NATHAN (Natalio S) | Ambulantes y obliteraciones ferroviarias de espana [1979] | Railways |
| NATHAN (Natalio S) | The message carriers of Cadiz 1830-1860 [1976] | N/A |
| NAYEEM (M A) | Evolution of postal communications & administration in the Deccan (from 1294 AD to the formation of the Hyderabad State in 1724 [1968] | N/A |
| NAYEEM (M A) | The philatelic & postal history of Hyderabad [1967] | N/A |
| NAYLOR (SP) | Railway postal history of South Africa | N/A |
| NEDERLANDS SPOORWEGMUSEUM | Spoor en post in Nederland: een wegwijzer bij het verzamelen van frankeer- en andere zegels en stempels uitgegevendost, in Utrecht [1979] | N/A |
| NEGUS (James) | The Earl of Crawford KT (1847-1913): a short biographical sketch [2002] | N/A |
| NEGUS (James) | Our national philatelist: Sir Edward Denny Brown KCVO (1860-1938) [1999] | N/A |
| NEGUS (James) | Philatelic literature, compilation techniques & reference sources [1991] | N/A |
| NENTASCHI (M) | Letter Mail from and to the Old Italian States 1850 – 1870 | N/A |
| NETHERLANDS PTT MUSEUM | Het Nederlandse PTT 1996 jaarveslag [1997] | N/A |
| NETHERLANDS: Post Office | Jaarverslag 1966:het Nederlandse PTT Museum [1996] | N/A |
| NETHERLANDS: Post Office | De weg van het woord (the way of the word) [1948] | N/A |
| NEVIN (D) | The Expressmen [1974] | N/A |
| NEW YORK | New York Post Office Guide January 1891, April 1891 | N/A |
| NEWALL (Alexander S) | British external air mails until 1934 [1985] | Aviation |
| NEWMAN (Stanley) | Mailboats to Lundy [1993] | Maritime |
| NEWMAN (Stanley) | Postal history, postmarks & cachets of Lundy Island: an illustrated priced guide & handbook [1991] | Great Britain |
| NEWPORT (O William) | Channel Islands-France mail services 1683-1939 [1956] | France, Maritime |
| NEWPORT (O William) | The post in Liverpool, edited by John Sussex [1988] | N/A |
| NEWPORT (O William) | Priced catalogue of Channel Islands postal markings 4th Edition [1975], 5th Edition [1976] | N/A |
| NEWPORT (O William) | Specialised priced catalogue of Channel Islands stamps 1976-7 10th edition [1976] | N/A |
| NEWPORT (O William) | Stamps & postal history of the Channel Islands [1972] | N/A |
| NEWPORT (O William) | French Islands: a priced catalogue to the postal history of the islands of the north & west coasts of France [1981] | France |
| NICHOLSON (L C C) | Jamaica obliteration numbers [1949] | N/A |
| NICHOLSON (L C C) | Jamaica pre-stamp covers 1760-1860 [1936] | N/A |
| NICHOLSON (L C C) | Jamaica: temporary rubber datestamps 1881-1938 [1938] | N/A |
| NICHOLSON (Martin P) | The postal history of Guyana: vol 1 The post offices and postmarks [1996] | N/A |
| NICHOLSON (Martin P) | The postal history of Nigeria to 1900 [1986] | N/A |
| NICHOLSON (Martin P) | The postal history of Nigeria 1900-1936 [1985] | N/A |
| NICHOLSON (Martin P) | The postal history of Sierra Leone 1914-1961 [1985] | N/A |
| NICHOLSON (Martin P) | Transatlantic post during the Machin era: vol 1 – USA to UK | Maritime |
| NICOLAS (Alain) | Foreign post offices and their cancellations in the Helladic territories. Vol A: to 1923 [1996] | N/A |
| NIERINCK (Henri L) | Courrier recoupere / recovered mail: Accidents et d’incidents d’avions / airplane crashes and incidents Vol. 1 – 1910-1936; Vol. 2 – 1937-1988 [1993-5] | Aviation |
| NOALL (Cyril) | A History of Cornish Mail – and Stage Coaches [1963] | Coaching |
| NODDER (WG) | The Postal history and Postmarks of British Central Africa & Nyasaland Protectorate | N/A |
| NOEL (Gilbert) | Cachets des marques et cachets d’entree en France 1800-1881, provenance d’Europe [1965] | France |
| NORBY (Reidar) | Scandinavian postal numeral cancellations [1969] | Scandinavia |
| NORGES POSTSTEDEN | List of post offices & stations giving their postal district, head office & money order limit in kroner [1952] | N/A |
| NORONA (Delf) | Norona’s general catalog of United States postmarks… 1st ed [1935] | N/A |
| NORONA (Delf) | Cyclopedia of United States postmarks & postal history [1975] | N/A |
| NORRIN (N J) | Keeping in Touch, Communications through County Kildare before 1860 | N/A |
