Records of the Border Defense Council
The Records of the Border Defense Council of Joseon or Bibyeonsa Deungnok () are the records of the Border Defense Council of Joseon. There are currently 273 extant books that were produced between 1617 and 1892. While the original intent was to produce one volume per year, in some years they produced multiple volumes; an uncertain number of volumes and pages are considered lost. The records are considered a critical source for the study of Joseon history. On December 31, 1971 the Records were designated a National Treasure of South Korea. Background 

The council was a temporary bureau established during the reign of King Jungjong in the 16th century that managed national security after the Japanese invasions of Korea. The powers of the Council were gradually expanded throughout the invasion, until it eventually became the most powerful body in the government. Description
There is disagreement as to when the records were first published. One theory is that the records were started when the council was established in 1555. Under this assumption, there should be 276 books. The records consist of 273 extant volumes produced between 1617 and 1892. The title of each year's record is not always consistent, depending on incidents occurred in each year. Each annal firstly recorded the era of the King, the date and the member of the discussion in each month's council and then, the contents could be published. Therefore, the reader can find out what kinds of incidents happened and how the council legislated the aftermaths. The records are considered a highly-valued and diverse description of the Joseon society and economy. They were originally published and held at the Kyujanggak. From 1959 to 60, the Korean History Committee re-published the full annals in 28 parts. Translations of the texts into modern hangul finished publication by 2010. The council was abolished in 1865, the second year of the reign of Gojong of Joseon. Power was returned to the former supreme organ, the State Council of Joseon. However, the Records continued to be updated until 1892, albeit under the title Uijeongbu Deungnok (). See also
 Veritable Records of the Joseon Dynasty
 State Council of Joseon
 Joseon dynasty
 History of Korea
 National treasures of South Korea

References

External links
 The hangul translations of the documents

History books about Korea
Joseon dynasty works
National Treasures of South Korea
History of Korea