| LANDER (J G C) editor | Malta 1530-1806 [mail of the Knights of Malta & Napoleonic occupation] [1976] | France, Military |
| LANE (E N) | Wartime mail routes from China to the West [1980] | Aviation |
| LANGLAIS (L -E) | Deuxieme Service Postal du Pacifique Sud 1872-1874 – Consulat de France a Panama 1848-1881 [2008] | Maritime |
| LANGLAIS (L-E) | Premier Service Postal du Pacifique Sud – Consulat de France a Panama 1843-1848 [2006] | Maritime |
| LANGLAIS (L-E) | Poste Maritime Francaise – Les Paquebots du Mexique 1827-1835 | France, Maritime |
| LANGLOIS (M) | Les obliterations des bureaux de poste de l’Afrique du Nord (Algerie – Tunisie – Maroc) [1930] | N/A |
| LANGLOIS (Maurice) | Catalogue des estampilles et marques postales d’Alsace et de Lorraine 1698 a 1870 [1937] | N/A |
| LASZLO (Ettre) | The private hotel posts of Transylvania from the 19th century to the 1st quarter of the 20th (text in Hungarian) [1986] | Hotels |
| LAVARACK ( Dennis) | Nomenclature des bureaux de poste francais 1876-1899 [1967] | N/A |
| LAWRENCE (A) | Besieged in Paris [2014] | Military |
| LAWRENCE (Ashley) | 100 years of ‘la Semeuse’, a display to the Royal Philatelic Society London, 20 Feb 2003 | N/A |
| LAWSON (Gerald) | New Zealand chief post offices: a chronological postal history study [2006] | N/A |
| LE COUTURIER (Yves) | La poste automobile et les vehicules des PTT 1897-1970 | N/A |
| LE NAIN (Louis) | Les bureaux francais a l’etranger du XVIe siecle a 1817. Les bureaux etrangers a Rome avant 1810 | N/A |
| LE RALLE (A) | Histoire postale des departements francaise d’Allemagne du Nord | France, Germany, Napoleon |
| LEE (Alma) | Introducing thematic collecting; edited by Richard West [1984] | N/A |
| LEE (Hector H B) | The postal history of Tenby | N/A |
| LEE (O R J) | Australia and New Zealand to Great Britain (wartime services 1939-1945) [nd] | N/A |
| LEE (O.R.J.) | Indian Military Air Letter Cards 1942-47 [1985]` | Aviation, Military |
| LEE (Roger) | The postal history of British New Guinea & Papua 1885-1942 [1983] | N/A |
| LEEMAN (H) | The Swiss hotel post [nd] | N/A |
| LEEMAN (H) | Swiss Red Cross stamps & special franchise 1870-71 [nd] | Military |
| LEGENDRE (James) | Bureaux speciaux franchises, contreseings, marques administratives des origins a 1900 Vol. 1 1575-1848 [1998] | Official |
| LEGENDRE (James) | Catalogue des bureaux speciaux ‘marques postales et obliterations’ classee par ordre chronologique des origines a 1876 [1963] | N/A |
| LEIMENSTOLL (Wolfgang), | KPHTH = Kreta = Crete: postgeschiedenis – postzegels – postal history – stamps… | N/A |
| LEJEUNE (P) | Marques Postales Obliterations 1720 a 1876 Indre [1959] | N/A |
| LEJEUNE (P) | Marques Postales et Obliterations 1700 a 1876 La Creuse [1957] | N/A |
| LEJEUNE (P) | Marques Postales et Obliterations 1700 a 1876 Allier [1957] | N/A |
| LENAIN (Louis) | La poste de l’ancienne France des origines a 1791 [1965] | N/A |
| LENAIN (Louis) | La poste aux armees et les relations postales internationales des origines a 1791 [1968] | Military |
| LENAIN (Louis) | Les Marques Postales du Bureau Francais de Geneve 1669-1798 [1955] | N/A |
| LEONARD (Alan) | Great steamers white and gold: a history of Royal Mail ships and services [1993] | N/A |
| LEONARD (Charles) | The post between Great Britain and Russia via Prussia 1852-1975 | Germany, Great Britain, Russia |
| LERALLE (Andre) | Les marques postales francaises de Hambourg pendant l’occupation Napoleonienne 1806-1814 [1946] | France, Germany |
| LEUTZINGER (John F) | The handstamps of Wells, Fargo & Co 1852 to 1895, 2nd ed [1993] | N/A |
| LEVETT (John H) | France: a brief history of the stamps and cancellations from 1849-1876 [nd] | N/A |
| LEVIN (Astley) | Swedish Post Offices with dates of opening; Packet Boat routes & Dates [1919] | N/A |
| LEVINGE (N) & PRASAD (R) | India 1935 Silver Jubilee Stamps [2018] | N/A |
| LEWINS (William) | Her Majesty’s mails: a history of the Post Office, and an industrial account of its present condition, 2nd ed [1865] | N/A |
| LEWIS (Colin D) | The 18th and 19th century postal history of Newfoundland: a display to the Postal History Society [2005] | N/A |
| LEWIS (David J) | Brief for a general parcel post…[USA] [1913] | Parcels |
| LEWIS (David J) | A study in some proposed improvements to the parcel post: an opportunity [presented] to Hon Albert S. Burlesdon, Postmaster General [1915] | Parcels |
| LEWIS (Eric) | Sheffield Posts in Peakland and the Hope Valley [1979] | N/A |
| LEWIS (Geoffrey) | Postal history of the Spanish Philippines 1565-1898 | N/A |
| LEYLAND (V B) | John Palmer [an essay]. 4pp [1953] | N/A |
| LHERITIER (Gerard) | Les ballons montes: boules de Moulins, pigeongrammes, papillons de Metz; historique, evaluation,classification, cotation [1990] | Aviation |
| LHERITIER (Gerard) | Valeurs & references: Collection 1870, Ballons montes [2000] | Aviation |
| LIBRARY of CONGRESS | Select list of references on the postal service of the United States [1911]; Supplements [1923, 1931] | N/A |
| LILLYWHITE (Bryant) | London coffee houses: a reference book of coffee houses of the seventeenth and eighteenth centuries [1963] | N/A |
| LINDEN (James van der) | Catalogue marques de passage / Postvertrags stempel: origine, transit, comptable 1661-1875 [1993]; Supplement [1998] | Maritime |
