Question: When did Bobby Helms release his last recording of Jingle Bell Rock?
About the article "Jingle Bell Rock", section "Helms recordings".

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"Jingle Bell Rock" has been performed by many, but Helms' version is the most known in the world.
Its title and some of its lyrics are takeoffs on the old Christmas standard, "Jingle Bells."
It makes brief references to other popular songs of the 1950s, such as "Rock Around the Clock," and mentions going to a "Jingle hop."
An electric guitar played by Hank Garland can be heard playing the first notes to the chorus from "Jingle Bells.
"Despite being titled a Jingle Bell "Rock", Helms' version of the song was performed in the crossover style known as rockabilly.
Bobby Helms' original version on Decca 9-30513 from 1957, was re-recorded by him on Kapp K-719 in 1965 and yet again in 1967 on Little Darlin' LD-0038.
In 1970, Helms recorded an entire album titled "Jingle Bell Rock" on Certron C-7013, releasing from the album the title track on Certron C-10021 with a picture sleeve.
In yet another re-recording, Helms released a version on Ashley AS-4200 (year unknown).
In 1983, Bobby Helms released his last recording of "Jingle Bell Rock" on Black Rose 82713.
Robert Lee Helms (August 15, 1933 – June 19, 1997), known professionally as Bobby Helms, was an American country music singer who enjoyed his peak success in 1957 with the seasonal hit "Jingle Bell Rock".
His other hits include "Fraulein" and "My Special Angel". 
"Jingle Bell Rock" is a popular Christmas song first released by Bobby Helms in 1958.
It has received frequent airplay in the United States during every Christmas time since then.
"Jingle Bell Rock" was composed by Joseph Carleton Beal (1900–1967), and James Ross Boothe (1917–1976).
Beal was a Massachusetts-born public relations man and longtime resident of South Ocean Avenue in Atlantic City, New Jersey, and Boothe was a Texan writer in the advertising business. 
Born in Bloomington, Indiana into a musical family, Helms began performing as a duo with his brother, Freddie, before going on to a successful solo career in country music.
In 1956, Helms made his way to Nashville, Tennessee, where he signed a recording contract with Decca Records.
The following year was filled with successes.
Helms' first single in 1957, titled "Fraulein", went to No.
1 on the country music chart and made it into the Top 40 on the "Billboard" Hot 100 chart.
Later that same year, he released "My Special Angel", which also hit No.
1 on the country charts and entered the Top 10 on "Billboard's" pop music chart, peaking at No.
Released just a few days before Christmas 1957, his song "Jingle Bell Rock" was a big hit.
It also re-emerged in four out of the next five years, and sold so well that it repeated each time as a top hit, and became a Christmas classic still played to this day.
It took five years for the song to become a second million-seller for Helms.
It reached No.
6 on the "Billboard" Hot 100 and spent 21 weeks in the chart.
The record gained gold disc status.
Accounts that Helms wrote and recorded the song with Hank Garland seem to be apocryphal—ASCAP and Allmusic list the writers of the song as Joseph Beal, Joseph Carlton, James Ross and James Boothe.
Helms continued touring and recording for the next three decades.
His pioneering contribution to the genre has been recognized by the Rockabilly Hall of Fame.
Helms spent most of his later years living just outside of Martinsville, Indiana, until his death from emphysema and asthma at the age of 63 in 1997.
He was portrayed by actor Brad Hawkins in the 2007 film "Crazy".
Another record by Helms was "Schoolboy Crush", which was a hit in the UK.
It was released in the USA on June 23, 1958 on Decca.
The same song was then covered by UK teen star Cliff Richard about the same time as the UK release. 
 Five relatives of former German Chancellor Philipp Scheidemann, arrested a month earlier in retaliation for an anti-Nazi article that Scheidemann had written while in exile, was released from detention in a concentration camp, but not without the personal intervention of President Paul von Hindenburg and the five persons' declaration of "deep abhorrence of their kinsman's treasonable conduct".
The government announcement of their release added that "Attention is called in this connection to the fact that in the future, further relentless measures will be taken if fugitive Marxists should attempt to propagandize Germany.
Born: Jim Lange, American disc jockey and game show host ("The Dating Game"), in Saint Paul, Minnesota; Bobby Helms, American singer best known for his 1957 song "Jingle Bell Rock", in Bloomington, Indiana (d. 1997); Mike Seeger, American folk musician, in New York City (d. 2009); and Stanley Milgram, American psychologist known for the 1962 Milgram Experiment, in New York City (d. 1984)