Question: When was the Lord of The Rings published?
About the article "The Lord of the Rings", section "Themes".

Candidate passages:
The Corsairs of Umbar were first mentioned in "The Return of the King" when this third volume of "The Lord of the Rings" was published in 1955.
The Appendix A to "The Lord of the Rings", "Annals of the Kings and Rulers", also contains an overview of the fictional history of Gondor including the constant strife with Umbar until the end of the Third Age.
"The Silmarillion", edited by Tolkien's son Christopher from his father's manuscripts and published in 1977 five years after Tolkien's death, contains a part "Akallabêth".
This expands further on the events of the Second and Third Age that had been mentioned before in the Appendix to "The Lord of the Rings".
Umbar appeared on the bottom edge of the maps found in earlier editions of "The Lord of the Rings", but it is absent from modern editions, which maps a slightly smaller area of Middle-earth. 
Lord of the Rings Adventure Game is a role-playing game based on the writings of J.R.R.
Tolkien (specifically "The Lord of the Rings" and "The Hobbit") under license from Tolkien Enterprises.
Iron Crown Enterprises (I.C.E.)
published the game until they lost the license on 22 Sep 1999. 
"The Lord of the Rings" has been adapted for film, radio and stage.
The book has been adapted for radio four times.
In 1955 and 1956, the BBC broadcast "The Lord of the Rings", a 12-part radio adaptation of the story.
In the 1960s radio station WBAI produced a short radio adaptation.
A 1979 dramatization of "The Lord of the Rings" was broadcast in the United States and subsequently issued on tape and CD.
In 1981, the BBC broadcast "The Lord of the Rings", a new dramatization in 26 half-hour instalments.
This dramatization of "The Lord of the Rings" has subsequently been made available on both tape and CD both by the BBC and other publishers.
For this purpose it is generally edited into 13 one hour episodes.
Two film adaptations of the book have been made.
The first was "J. R. R. Tolkien's The Lord of the Rings" (1978), by animator Ralph Bakshi, the first part of what was originally intended to be a two-part adaptation of the story; it covers "The Fellowship of the Ring" and part of "The Two Towers".
A three-issue comic book version of the movie was also published in Europe (but not printed in English), with illustrations by Luis Bermejo.
When Bakshi's investors shied away of financing the second film that would complete the story, the remainder of the story was covered in an animated television special by Rankin-Bass.
Stylistically, the two segments are very different.
The second and more critically and commercially successful adaptation was Peter Jackson's live action "The Lord of the Rings" film trilogy, produced by New Line Cinema and released in three instalments as ' (2001), ' (2002), and "" (2003).
All three parts won multiple Academy Awards, including consecutive Best Picture nominations.
The final instalment of this trilogy was the second film to break the one-billion-dollar barrier and won a total of 11 Oscars (something only two other films in history, "Ben-Hur" and "Titanic", have accomplished), including Best Picture, Best Director and Best Adapted Screenplay.
"The Hunt for Gollum", a fan film based on elements of the appendices to "The Lord of the Rings", was released on the internet in May 2009 and has been covered in major media.
In 1990, Recorded Books published an audio version of "The Lord of the Rings", with British actor Rob Inglis – who had previously starred in his own one-man stage productions of "The Hobbit" and "The Lord of the Rings" – reading.
A large-scale musical theatre adaptation, "The Lord of the Rings" was first staged in Toronto, Ontario, Canada in 2006 and opened in London in May 2007. 
Interest in Turkey awoke to "The Lord of the Rings" in the late 1980s, long before the first Turkish translation.
A translation of "The Lord of the Rings" into Turkish was published as "Yüzüklerin Efendisi" in 1997.
After the release of the movies, other Tolkien-related literature was published (Silmarillion, Roverandom etc.)
  "The Lord of the Rings" (1955 radio series), a BBC radio series  "The Lord of the Rings" (1979 radio series), an American NPR series  "The Lord of the Rings" (1981 radio series), a BBC radio series  "The Lord of the Rings" (musical), a live theatrical production