| COUVE (M) | Les Piquages semi-prives des chiffres-atxe carres de France [2012] | N/A |
| COWELL (J B) | The Bangor penny post 1814-1840 | N/A |
| COWELL (J B) | The Postal History of Beaumaris | N/A |
| COWELL (J B) | The Postal History of Beaumaris | N/A |
| COYSH (A W ) | The dictionary of picture postcards in Britain 1894-1939 | Postcards |
| COYTE (K L) editor | Postal jurisdictions of the world | N/A |
| CRABB (George F) | The history & postal history of Tristan da Cunha | N/A |
| CRABB (George F) | Tristan da Cunha its postal history and philately | N/A |
| CRABB (George) | The postal history of the British army in world war 1 | N/A |
| CRAWFORD (ALLAN) | Tristan da Cunha and the roaring forties | N/A |
| CREWE (Anthony C) | The post office markings of Madrid 1757-1900 | N/A |
| CRISP (A) | The French Line – La Compagnie Generale Transatlantique [2011] | Maritime |
| CRITCHETT & WOODS | The Post-Office Annual Directory for 1811 (12th Edition) | N/A |
| CROAKER (Hamilton) | The postmarks of British New Guinea & Papua to 1942 | N/A |
| CROLS (Roger) | Gelderse monumenten reeks: postkantoren | N/A |
| CROMPTON (J) | New Hebrides, Cancellation Study, 1892-1980 [1995] | N/A |
| CROUCH (G R) | British Army Field Post Offices 1939-1950: locations & assignments [cover title] | Military |
| CRUSTIN (Jules) | Dictionnaire des bureaux de la poste aux lettres du Royaume de Belgique et des communes qu’ils | Belgium |
| CRUSTIN (Jules) | Les relations postales internationales via l’ambulant allemand no.10 [Cologne-Verviers via | Railways |
| CRUTCHLEY (E T) | GPO | N/A |
| CUMMING (Oliver D) | [The Levant: a paper] presented to the Royal Philatelic Society, London, December 1993 | N/A |
| CUMMINGS (Hayman) | The college stamps of Oxford & Cambridge, a study of their history & use…1870-1866… | N/A |
| CUNY (G-P) | Les cachets manuels de l’administration des postes apposes a Paris de Mars 1876 a nos jours | N/A |
| CUNY (G-P) | Les timbres a date manuels de la recette principale a Paris de Mars 1876 a nos jours | N/A |
| CUSHING (Marshall) | The story of our post office | N/A |
| CUSWORTH (M) | The Italian South Atlantic Airline (LATI) [2012] | Aviation |
| CYPRUS STUDY CIRCLe | Publicity Handstamps 1934-40 | N/A |
| D'HONDT (D) | Les bureaux ambulants de Belgique: leur role, les modifications et les obliterations | Railways |
| D'HONDT (D) | Les bureaux ambulants de Belgique: leur role, les modifications et les obliterations [1936] | Railways |
| DAGNALL (H) | For the benefit of trade & commerce: the postal treatment of ‘prices current’ [1987] | Newspapers |
| DAGNALL (H) | Creating a good impression: three hundred years of The Stamp Office and stamp duties [1994] | Revenues |
| DAGNALL (H) | Ex luce lucellum: the protest against the Match Tax of 1871 and its stamp [1993] | Revenues |
| DAGNALL (H) | The mechanised sorting of mail [1976] | Mechanisation |
| DAGNALL (H) | Newspapers in the Post: some aspects of the privileged treatment accorded to them [1989] | Newspapers |
| DAGNALL (H) | Paper duty labels: their background history & use [1988] | Revenues |
| DAGNALL (H) | Postman’s Park & its memorials [1994] | N/A |
| DAGNALL (H) | Parcel postage paid by impressed stamps [1987] | Parcels |
| DAGNALL (H) | Post horse tickets: their historical background, purpose & use [1998] | Coaching |
| DAGNALL (H) | Precancelled stamps of newspapers [1982] | Newspapers |
| DAHMANN (Kurt) | Deutsche luftpost / German airmails 1919-1944, 2nd ed [1970] | Aviation |
| DAHNKE (K H) | Tibet: handbuch und katalog der marken und stempel [1978] | N/A |
| DALLMEIER (Martin) | Quellen zur geschichte des europaischen postwesens 1501-1806, 3 vol [1977] | N/A |
| DALTON HARRIS (R) & DEBLOIS (D) | An Atlantic Telegraph – The Transcendental Cable [1994] | Telegraph |
| DALWICK (R E R) | The Gambia: being a study of the postal history & postage stamps of the West African colony [1953] | N/A |
| DAM (Theo van) | Beyond War dates 1911-1950 and more: additions, corrections, background stories [1994] | Military |
| DAM (Theo van) | A postal history of Spain [1972] | N/A |
| DAM (Theo van) | War dates 1911-1950: a geographical and chronological listing of wars, major campaigns, occupations [1994] | Military |
| DANIEL | The Post, a Universal link between men | N/A |
| DANIELS (J H) | A history of British postmarks: together with a list of numbers used in obliterations in Great Britain and certain colonial possessions [1898] | N/A |
| DANIELSKI (S) | The Maritime Postmarks of the Danish Kingdom, [2009] | Maritime |
