| MAKKAI (L), | Handbook of the Hungarian pre-stamp mail | N/A |
| MALTA STUDY CIRCLE | Valetta GPO letter mail 1897-1980 [1990] | N/A |
| MALTA STUDY CIRCLE | The air mails of Malta: Study Circle Paper 29, by J M Pollard; and updated by G Coates [1979] | Aviation |
| MALTA STUDY CIRCLE | Handstuck marks of the Island Post Office: updated from Study Circle Paper 5, by A F Moyles et al | N/A |
| MALTA STUDY CIRCLE | Malta Post Office 1806-1885 [1989] | N/A |
| MALTA STUDY CIRCLE | Malta registered (original paper by J GC Lander, revised by A F Moyles) [1993] | Registration |
| MALTA STUDY CIRCLE | Prisoner of War mail (WWI & WWII) [1991] | Military, POW |
| MALTA STUDY CIRCLE | U2: unidentified divided back cards [1996] | N/A |
| MALTA STUDY CIRCLE | Malta Reply Coupons [1980] | Reply Coupons |
| MALTA STUDY CIRCLE | War Time Air Mail [1977] | Aviation |
| MALTA STUDY CIRCLE | The Post Offices of Gozo [1988] | N/A |
| MANCHESTER (Diana) ed | The postage rates of Germany 1906-1923 [1991] | N/A |
| MANN (J T W) | V Bells & other slogan poastmarks of 1945 [1957] | Mechanisation |
| MANN (Jason T W) | Columbia stamp-cancelling machines at the E.C.D.O., London 1901-7 [1963] | Mechanisation |
| MANSON | The Ryohei Ishikawa Collection: United States stamps & covers 1847-1869 | N/A |
| MAPLETON (M J) | Rubber datestamps of Cumbria [1994] | N/A |
| MARCHESE (Giuseppe) | La posta militare Italiana 1940-1943. Catalogo con valutazioni [1981] | Military |
| MARCHOT (G) | Lettres des internes du Camp des Milles [2012] | POW |
| MARECHAL (G), | La poste maritime, les paquebots francais et leurs cachets 1780-1935 [1936] | France, Maritime |
| MARINESCU (Calin) | Oficile, agentile si garile postale romane 1850-1950 [1999] | N/A |
| MARK (G) | Imperial & foreign mails: Sea conveyance during war 1914-1918 [1997] | Maritime |
| MARK (G) | Prisoners of War in British Hands during WWI [2007] | Military, POW |
| MARK (Graham) | British censorship of civil mails during World War I, 1914-1919 [2000] | Censorship, Military, WW1 |
| MARSHALL (C F Dendy) | The British Post Office from its beginning to the end of 1925 [1926] | N/A |
| MARTEAU ( C) | Les Types de Boites aux Lettres et Indicateurs de Levees du 1er Avril 1830 a nos jours [1987] | N/A |
| MARTIN (D R) | Further postal history of the Second Afghan War 1878-81, with Kandahar and Baluchistan 1881-87 [1961] | Military |
| MARTIN (D R) | Numbers in early Indian cancellations 1855-1884 [1970] | N/A |
| MARTIN (D R) | The postal history of the First Afghan War 1838-1842 [1964] | Military |
| MARTIN (D R) | Overseas letter postage from India 1854-1876 [1975] | N/A |
| MARTIN (Denys) | Burma postal history [with suppt] | N/A |
| MARTIN (Jeremy J) | Togo: the postal history of the Anglo-French occupation 1914-1922 [1995] | WW1 |
| MARTIN (Jeremy J) | West African censorship World War I & II: covering Ascension, Cameroon, Gambia, Gold Coast, Nigeria, St Helena, Sierra Leone & Togo [1993] | Censorship, Military |
| MARTIN (Nancy) | The Post Office from carrier pigeon to Confravision [1969] | Mechanisation |
| MARTIN (R E) editor | Malta: forces mail [1974] | Military |
| MARTIN (R E) editor | Malta postal rates [1975] | N/A |
| MARTIN (R E) editor | Malta the stamps and postal, history 1576-1960: a handbook compiled by the Malta Study Circle [1980] | N/A |
| MARTIN (R E) editor | Prisoner of War mail [1975] | Military, POW |
| MARTIN (R) | The Postal History of Bristol Vols 1 to 4 [2017] | N/A |
| MARTINEZ (Manuel Lago) | Prefilatelia de Galicia [1962] | N/A |
| MASELIS (P) | From the Azores to New Zealand, The Belgian Colonies on all six continents 1451-1916 [2005] | N/A |
| MASELIS (P) SCHOUBERECHTS (U) & TAVANO ( | Postal History of the Lado Enclave [2009] | N/A |
| MASSY (A J P) | Isle of Man postmarks (3 parts in 2 vol) [1968-69] | N/A |
| MASSY (A J P) | Isle of Man postmarks: surface & air [1977] | N/A |
| MATHA (Thomas) | Letter Mail from and to the Old Italian States 1850 – 1870 [2008] | N/A |
| MATHIESEN (Kjell) | Norwegian pre-stamp marks [1983] | N/A |
| MATHIEU (Armand) | Cachets a date de France (1854-1876) [1975] | France |
| MATSUMOTO (Jun Ichi) | The French Post Office in Yokohama [1997] | N/A |
| MATSUMOTO (Jun Ichi) | Histoire de la Poste Aerienne Franco-Japonaise 1870-1986 [2000] | Aviation |
| MATTSON (Robert) | The history of the stamp [1991] | N/A |
| MAYER (FR) | The Postal History of Costa Rica to 1883 | N/A |
