| LINDEN James Van der | Mail across the Oceans: form the beginning to 1875 (2019) | Maritime |
| LINDER (L) | Finlands Ovalmarken (1856-1860) [1956] | N/A |
| LINDSAY (L) | Benjamin Cheverton: RPSL paper [1910] | N/A |
| LINDSAY (W S) | The Lindsay packet service 1856-7, [1999] | Maritime |
| LINDSEY (Grahame) compiler | Italian lake mail postal markings [2003] | Maritime |
| LINFIELD (G R) | The cancellations of Melbourne 1861-1912; in collaboration with J R W Purves | N/A |
| LISSARRAGUE (Jean) | Les boites mobiles de la voie de terre [1853-1869] | N/A |
| LISTER (Peter) | Airway letters of the United Kingdom (1933-1988) [1994] | Aviation |
| LISTER (Raymond) | College stamps of Oxford and Cambridge [1966] | N/A |
| LISTER (Raymond) | Private telegraph companies of Great Britain & their stamps [1961] | Telegraph |
| LIVNAT (R) | Jerusalem et la Poste Francaise en Terre sainte 1843-1914 | France, Maritime |
| LOBEL (Joseph) | Le Tarn et Garonne Postal [1980] | N/A |
| LOKEBERG (Sigurd) | Norsk dampskipspost litt historikk omkring vAr forste dampskipspost og datidens komminikasjoner [1978] | N/A |
| LONDON MIDLAND & SCOTTISH RAILWAY | The Story of the Irish Mail 1848-1934 [nd] | Maritime, Railways |
| LOOMIS (N M) | Wells Fargo [1968] | N/A |
| LOVEGROVE (J W) | Herewith my frank: a study of the free franks [1975]; Second Edition [1989]; Supplements | Official |
| LOVEJOY (G) | The Postal History of The Factory Inspectorate (Sturat Rossiter Trust Fund Journal) [2000] | N/A |
| LOVEJOY (Geoff) | Mail routes through the Baltic States | Maritime |
| LOVELOCK (AD) | Postal Markings of the Holyhead & Kingstown Packet 1860-1925 [2006] | Maritime |
| LOVERIDGE (JD) | Sancerre, a Postal History Vol. 1 to 1876 [nd] | N/A |
| LOWDER (J W A) | The ‘Hey Dolphin’ machines of Great Britain | N/A |
| LOWDER (J W A) | The Krag machine cancellations | N/A |
| LOWE (ROBSON) | A glossary of abbreviations found on handstruck stamps [1959] | N/A |
| LOWE (Robson) | The Codrington correspondence 1743-1851 [1951] | Maritime |
| LOWE (Robson) | From China and Tibet: a commentary on letters written by missionaries working in the interior 1844-1865 [1981] | N/A |
| LOWE (Robson) | The handstruck postage stamps of 1840 [1938] | Rowland Hill |
| LOWE (Robson) | Indian Field Post offices 1903-04, The Aden-Yemini Boundary Commission, The Somaliland Field Force [1979] | Military |
| LOWE (Robson) | The Knights of Malta. The Lazara correspondence 1622-1669, 1789-1798 [1987] | N/A |
| LOWE (Robson) | Indian stamps used abroad: Indian campaign & field post offices [1940] | Military |
| LOWE (Robson) | The work of Jean de Sperati II: including previously unlisted forgeries [2001] | N/A |
| LOWE (Robson) | St Vincent. The postal history 1762-1965: the postage stamps 1861-1897; The cancellations & | N/A |
| LOWE (Robson) | World War II US Service Mail [1991] | Military |
| LOWE (Robson) | The British postage stamp: being the history of the nineteenth century postage stamps based on the collection presented to the nation of Reginald M. Phillips [1968] | Rowland Hill |
| LOWE (Robson) | Catalogues of the Corsini Correspondence Auctions; Sep & Oct 1984, Apr 1985, Nov 1986 | N/A |
| LOWE (Robson) | Historical letters to Gratious Street, London 1570-1601 [1988] | N/A |
| LUCCHINI (S) & TAGLIENTE (T) | Antologia dei Francobolli Publicitari [2012] | N/A |
| LUDINGTON (M H) | The Furness Line to Bermuda [1990] | Maritime |
| LUDINGTON (M H) | The Bermuda packet mails & the Halifax-Bermuda mail service 1806 to 1886 [1989] | N/A |
| LUDINGTON (M H) | Bahamas early mail services & postal markings [1982] | N/A |
| LUDINGTON (M H) | Bermuda: the handstruck stamps & their cancellations [1956]; Supplement [1968] | N/A |
| LUDINGTON (M H) | Postal history of blockade running through Bermuda 1861-1865 [1996] | N/A |
| LUDINGTON (M H) | The Royal Mail Steam Packets to Bermuda & the Bahamas 1842-1859 [1971] | Maritime |
| LUDINGTON (M H) & RAYMOND (G J) | The Bahama Islands – A History and Catalogue of the handstamps and cancellations [1968] | N/A |
| LUDLOW (Lewis M) | Catalogue of Canadian railway cancellations and related transportation postmarks [1982] | Railways |
| LUFT (Stanley J) | Military and postal history of the revolutionary armies in the west of France 1791-1802 [1993] | Military |
| LUMLEY (D O) | Air mail operation, Post Office Green Papersm [1935] | Aviation |
| LUNDH (Borge) | European letters to Finland 1819-1873 [1990] | N/A |
| LUNDH (Borge) | De forfilatelistiske stempler fra HAFNIA: KiOben – KjObenh – Kiobenhavn (exclusive Fodpost-stempler) | N/A |
| LUNDH (Borge) | The postal history of Helsingor 1740-1864 [1985] | N/A |
| LUNING (Orjan) | Luftpostens historia i Norden / The history of airmail in Scandinavia [1978] | Aviation |
