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Postal censorship

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Title: Postal censorship  
Author: World Heritage Encyclopedia
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Subject: Censorship, Cabinet noir, Postal history, Censorship in the United States, Censorship in the Republic of Ireland
Collection: Censorship, Civilians in War, Laws of War, National Security, Postal System
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Postal censorship

Part of message obliterated by indelible pencil

Postal censorship is the inspection or examination of mail, most often by governments. It can include opening, reading and total or selective obliteration of letters and their contents, as well as covers, postcards, parcels and other postal packets. Postal censorship takes place primarily but not exclusively during wartime (even though the nation concerned may not be at war, e.g. Ireland during 1939-1945) and periods of unrest, and occasionally at other times, such as periods of civil disorder or of a state of emergency. Both covert and overt postal censorship have occurred.

Historically, postal censorship is an ancient practice; it is usually linked to security and intelligence.

The study of postal censorship is a philatelic topic of postal history.


  • Military mail 1
  • Prisoner-of-war and internee mail 2
  • Civil mail 3
  • Countries known to have enacted postal censorship 4
    • Britain & American colonies 4.1
    • American Civil War 4.2
    • Pre–World War I 4.3
    • World War I 4.4
    • Between the wars 4.5
    • World War II 4.6
      • Imperial Censorship 4.6.1
      • United States 4.6.2
      • Neutral counties 4.6.3
    • Post–World War II 4.7
  • See also 5
  • References and sources 6
  • External links 7

Military mail

Military mail is not always censored by opening or reading the mail, but this is much more likely during war time and military campaigns. The military postal service is usually separate from civilian mail and is usually totally controlled by the military. However both civilian and military mail can be of interest to military intelligence, which has different requirements from civilian intelligence gathering. During wartime, mail from the front is often opened and offending parts blanked or cut out, and civilian mail may be subject to much the same treatment.

Prisoner-of-war and internee mail

Prisoner-of-war and internee mail is also subject to postal censorship, which is permitted under Articles 70 and 71 of the Third Geneva Convention (1929–1949). It is frequently subjected to both military and civil postal censorship because it passes through both postal systems.

Civil mail

"The Steamboat" - mobile steaming equipment used by Czech StB for unsticking envelopes during correspondence surveillance and censorship

Until recent years, the monopoly for carrying civilian mails has usually been vested in governments[1][2] and this has facilitated their control of postal censorship. The type of information obtained from civilian mail is different from that likely to be found in military mail.

1940 civil cover from Madrid to Paris opened by both Spanish and French (Vichy) authorities

Countries known to have enacted postal censorship

Throughout modern history various governments, usually during times of war, would inspect mail coming into or leaving the country so as to prevent an enemy from corresponding with unfriendly entities within that country. There exist also many examples of prisoner of war mail from these countries which was also inspected or censored. Censored mail can usually be identified by various postmarks, dates, postage stamps and other markings found on the front and reverse side of the cover (envelope). These covers often have an adhesive seal, usually bearing special ID markings, which were applied to reclose and seal the envelope after inspection.

Britain & American colonies

During the years leading up to the Mark FRPSL, Graham (2000). British Censorship of Civil Mails During World War I. Bristol, UK: Little, D.J. (2000). British Empire Civil Censorship Devices, World War II: Colonies and Occupied Territories - Africa, Section 1. UK: Civil Censorship Study Group. Torrance, A.R., & Morenweiser, K. (1991). British Empire Civil Censorship Devices, World War II: United Kingdom, Section 2. UK: Civil Censorship Study Group. Stich, Dr. H.F., Stich, W., Sprecht, J. (1993). Civil and Military Censorship During World War II. Canada: Stich, Stich and Sprecht. Herbert, E.S., & des Graz, C.G., ed. (1996). History of the Postal and Telegraph Censorship Department 1938–1946 Volume I & II. Civil Censorship Study Group by permission of Pfau, Ann (2008-09-27). "Postal Censorship and Military Intelligence during World War II" (PDF). Whyman, Susan E. "Postal Censorship in England 1635–1844" (PDF).

  • History comes to life with censored covers Linn's Stamp News (Wayback Machine archived link)
  • Why Mail Censorship is Vital to Britain (1916) Interview with Lord Robert Cecil, British Minister of Blockade (Wayback Machine archive link)
  • Website devoted to postal censorship with many examples of censored mail
  • Civil Censorship Study Group
  • Forces Postal History Society
  • Military Postal History Society

External links




Papers & reports

Harrison, Galen D. (1997). Prisoners' Mail from the American Civil War. Dexter, MI: Galen D. Harrison (?). 


Wolter, Karl Kurt (1965). Die Postzensur: Band I - Vorzeit, Früheit und Neuzeit (bis 1939). Munich: Georg Amm. 





  1. ^ Sylvain Bacon; Michael S. Coughlin (15 May 2004). "Achieving High Performance in A Competitive Postal Environment". Pushing the Envelope. Archived from the original on 16 June 2015. Retrieved 21 August 2006. 
  2. ^ The (US) Postal Monopoly (retrieved 21 August 2006)
  3. ^ Carson, Gerald (October 1974). "The U.S. Post Office, 1775-1974". American Heritage (American Heritage) 25 (6).  
  4. ^ New York Times/ABOUT.COM
  5. ^ ""American Civil War: POW camp at Andersonville . New York Times, about-com. Retrieved 17 November 2010. 
  6. ^ "Civilian Flag-of-Truce Covers". S.N.P.M. 
  7. ^ ""Prisoner mail exchange . Prisoner of War mail, Smithsonian National Postal Museum. Retrieved 17 November 2010. 
  8. ^ Hemmeon, Joseph Clarence (1912). The history of the British post office. Cambridge, MA: Harvard University. p. 46. 
  9. ^ Fiset, Louis (2001). "Return to Sender: U.S. Censorship of Enemy Alien Mail in World War II". Prologue Magazine Spring 2001, Vol. 33, No. 1.  
  10. ^ "Collecting Interests: Censorship". Anglo-Boer War Philatelic Society. 2014. Retrieved 9 April 2015. 
  11. ^ Fremont-Barnes, Gregory (2003). The Boer War 1899-1902. Wellingborough: Osprey Publishing. p. 82.  
  12. ^ a b c Wolter, Karl Kurt (1965). Die Postzensur: Band I - Vorzeit, Früheit und Neuzeit (bis 1939). Munich: Georg Amm. 
  13. ^ "Between the Wars - Italian Occupation of Ethiopia". Retrieved 2008-10-24. 
  14. ^ Shelley G., Ronald (1967). The Postal History of the Spanish Civil War 1936-1939. Hove. 
  15. ^ a b c Ó Drisceoil, Donal (1996). Censorship in Ireland, 1939-1945. Cork University Press. p. 62.  
  16. ^ Herbert, E.S., & des Graz, C.G., ed. (1952). History of the Postal and Telegraph Censorship Department 1938–1946 Volume I & II (CCSG reprint 1996).  
  17. ^ "Civilian Agency Records: Records of the Office of Censorship (RG 216)".  

References and sources

See also

1946 censored letter (15x8cms) from Heidelberg then in the USA-controlled zone of West Germany to England. Note "English" as the language of the enclosed letter.

Post–World War II

Neutral countries such as Ireland,[15] Portugal and Switzerland also censored mail even though they were not directly involved in the conflict.

Neutral counties

The United States blacklist, known as U.S. Censorship Watch List, contained 16,117 names.[17]

In the United States censorship was under the control of the Office of Censorship whose staff count rose to 14,462 by February 1943 in the censor stations they opened in New York, Miami, New Orleans, San Antonio, Laredo, Brownsville, El Paso, Nogales, Los Angeles, San Francisco, Seattle, Chicago, San Juan, Charlotte Amalie, Balboa, Cristóbal, David, Panama and Honolulu.

US WPA poster, 1943

United States

Dominions: Australia, Canada, Newfoundland, New Zealand, Southern Rhodesia (not a dominion but supervised by the Dominion office) and Union of South Africa
Colonies: Aden, Antigua, Ascension Island, Bahamas, Bahrain, Barbados, Bermuda, Ceylon, Cyprus, Dominica, Egypt, Falkland Islands, Fiji, Gambia, Gibraltar, Gilbert and Ellice Islands, Gold Coast, Granada, British Guiana, British Honduras, Hong Kong, Jamaica, Kenya, Malaya, Malta, Mauritius, Montserrat, New Hebrides, Nigeria, North Borneo, Northern Rhodesia, Nyasaland, Palestine, Penang, St. Helena, St. Lucia, St. Kitts and Nevis, St. Vincent, Sarawak, Seychelles, Sierra Leone, British Solomon Islands, Somalia, Sudan, Tanganyika, Trinidad, Tonga, Uganda, Virgin Islands and Zanzibar,

British censorship was mainly based in the Littlewoods football pools building in Liverpool with nearly 20 other censor stations around the country.[16] Additionally the British censored colonial and dominion mail at censor stations in the following places:

1940 censored letter from the USA to a recipient in England

Imperial Censorship

Both blacklists and whitelists were employed to observe suspicious mail or listed those whose mail was exempt from censorship.[15]

During United States, though the United Kingdom employed about 10,000 censor staff while Ireland, a small neutral country, only employed about 160 censors.[15]

Jewish censor staff in Warsaw Ghetto during 1941

World War II

Following the end of World War I there were some places where postal censorship was practiced. During 1919 it was operating in Austria, Belgium, Canada, German Weimar Republic and the Soviet Union as well as other territories.[12]:126–139 Other conflicts during which censorship existed included the Third Anglo-Afghan War, Chaco War,[12]:138 were the Italian occupation of Ethiopia (1935–36)[13] and especially during the Spanish Civil War of 1936-1939.[12]:141[14]

Between the wars

During the Great War (WWI) Postal censorship occurred in Great Britain, France, Germany and other various countries involved with that war.

World War I

During the Second Boer War a well planned censorship was implemented by the British that left them well experienced when The Great War started less than two decades later.[9] Initially offices were in Pretoria and Durban and later throughout much of the Cape Colony as well a POW censorship[10] with camps in Bloemfontein, St Helena, Ceylon, India and Bermuda.[11]

In Britain, the General Post Office was formed in 1657, and soon evolved a "Secret Office" for the purpose of intercepting, reading and deciphering coded correspondence from abroad. The existence of the Secret Office was made public in 1742 when it was found that in the preceding 10 years the sum of £45,675 (a huge amount at that time) had been secretly transferred from the Treasury to the General Post Office to fund the censorship activities.[8] In 1782 responsibility for administering the Secret Office was transferred to the Foreign Secretary and it was finally abolished by Lord Palmerston in 1847.

Second Boer War censored postcard from St. Helena to France in 1902

Pre–World War I

During the American Civil War both the Union and Confederate governments enacted postal censorship. The number of Union and Confederate soldiers in prisoner of war camps would reach an astonishing one and a half million men. The prison population at the Andersonville Confederate POW camp alone reached 45,000 men by the war's end. Consequently there was much mail sent to and from soldiers held in POW installations. Mail going to or leaving prison camps in the North and South was inspected both before and after delivery. Mail crossing enemy lines was only allowed at two specific locations.[5][6][7]

Prisoner of War cover to prisoner detained at Andersonville POW camp in Georgia

American Civil War


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