| BUTTERY (Edwin) | Robberies of the mails | Coaching |
| CABLE (Boyd) | A hundred year history of the P & O, Peninsular & Oriental Steam Navigation Company [1937] | Maritime |
| CAHN (William) | The story of Pitney-Bowes [1961] | Mechanisation |
| CALDER (W F) | Rhodesian post offices where & when [1984] | N/A |
| CALDER (W F) | Northern Rhodesia of the Federal period giving dates operating, map reference, name changes, | N/A |
| CALVERT (Charles) | A history of the Manchester post office 1625-1900 [1966] | N/A |
| CAMARA (Romano Caldeira) | Portuguese shipping companies, paquebot & ship cancellations | N/A |
| CAMPBELL (Frank W) | Canada Post Offices 1755-1895 [1972] | N/A |
| CAMPBELL (Hugh M) | New South Wales numerical cancellations…2nd ed | N/A |
| CAMPBELL (Hugh M) | The post offices & postal cancellations of Fiji [1957] | N/A |
| CAMPBELL (Hugh M) | Queensland postal history [1990] | N/A |
| CAMPBELL (Hugh M) | Hong Kong, a study of the modern post offices in the Colony with their cancellations [1957] | N/A |
| CAMPBELL (Hugh M) | Tasmania: the postal history & postal markings 2 Pts [1962-75] | N/A |
| CAMPBELL (P) | Posted in Advance for Christmas [2016] | N/A |
| CAMPBELL-SMITH (D) | Masters of the Post – The Authorised History of the Royal Mail [2011] | N/A |
| CAPE (Norman) | Ethiopia: Italian occupation & World War II period 1936-1943 [1982] | WW2 |
| CAPILL (Colin) | New Zealand and the Universal Postal Union to 1907 [1993] | N/A |
| Capon (R) | A Postal History for Oundle [2016] | N/A |
| CARLIN (Sven) | Vad kostade brevet? [How much did that letter cost?]: en bok om inrikes brevportot genom tiderna [1975] | N/A |
| CARNEVALE-MAUZAN (Marino) | Les camps d’internes civils en France et Afrique Francaise pendant la 1re Guerre Mondiale 1914-1919 [1984] | Colonies, France, Internees, Military, WW1 |
| CARNEVALE-MAUZAN (Marino) | La purification des lettres en France et a Malte [1960] | Disinfection |
| CARNEVALE-MAUZAN (Marino) | La poste en milieu rural: decouvertes et propositions, [2003] | N/A |
| CARNEVALE-MAUZAN (Marino) | Le service postal rural, son organisation, ses premieres marques (1830-1836) [1959] | N/A |
| CARRA (L) | Mantua and “the Flanders Route” [2005] | N/A |
| CARRARO (D & G), FERRARIO (A), NATOLI (G), PANZA ( | 1867-1870 De La Bataille de Mentana a la Breche de ‘Porta Pia” [2020] | Military |
| CARTER (F J) | The post and censor marks and other marks from prisoners of war letters 1914-1919 [1932] | Censorship, Military, POW |
| CARTWRIGHT (F C) | G-Men of the G.P.O.: the story of the G.P.O.’s fight against crime | N/A |
| CARY (Alan L) | Mail liners of the world | Maritime |
| CARY (John) | Facsimile edition of Cary’s survey of the high roads from London…1790. Reproduced from an original in the Post Office Archives [1990] | N/A |
| CARY (John) | New plan of London & its vicinity: showing the limits of the two-penny post delivery, [1842] | N/A |
| CASPARY (Alfred H) | [Auction] catalogues & list of prices realized 3 vol [1956-58] | N/A |
| CASTLE (Wilfrid T F) | Cyprus, 1353-1986, history, postal history & postage stamps 3rd ed [1987] | N/A |
| CATTEL (Philip) | The Union Castle ocean post offices | Maritime |
| CAVE (Stephen) | Barbados post office markings to 1981 | N/A |
| CAZZOLA (Walter) | Le regie colletorie postali Italiane: storia del loro funzionamento e die sistemi di obliterazione dal 1864 al 1900 [1976] | N/A |
| CERIANI (Juan Alberto) | Matasellos utilizados en las estafetas ambulantes ferroviarias Argentina 1865-1892 [1987] | Railways |
| CEYLAN (Sadik) | Turk Postalari ilk filatelik damga ve muhurleri 1863-1920 / Premiers marques postales philateliques de la Turquie [1963] | N/A |
| CHADWICK (P J) | Charge marks of the [Uniform] 4d post 1839-1840 [1990] | N/A |
| CHADWICK (P J) | The “Flat-Topped Three” of the London District Post [2020] | N/A |
| CHALMERS (Patrick) | Mr John Francis of the Athenaeum on the plan of Sir Rowland Hill [1889] | Rowland Hill |
| CHAMBERS (Arthur) | Norwegian travelling post offices 2 pts [1988] | Railways |
| CHAMBERS (Robert F) | Straight line town postmarks (1756-1856) [1933] | N/A |
| CHAMBOISSIER (Leon) | La poste a Paris pendant le siege et sous la commune 1870-71 [1969] | N/A |
| CHAMPION (R H) | Licences and related ephemera of Great Britain 1660-1939 [2004] | Revenues |
| CHAMPMAN (C R) & MOSS (R) | Detained in England 1914-1920: Eastcote POW Camp, Pattishall [2012] | POW |
| CHAMPNESS (M V D) | East Anglian helicopter mails [1973] | Aviation |
| CHAMPNESS (M V D) | Saffron Walden: some aspects of the postal history of an Essex town [1969] | N/A |
| CHAMPNESS (M V D) | Adhesive wafer seals: a transient Victorian phenomenon [1996] | N/A |
| CHANARYN (Victor) | An introduction to the posts of France in the Franco-German War of 1870-1871 and its aftermath [1976] | Military |
| CHANDLER (John H) | Post horse tickets: their historical background, purpose & use | Coaching |
