Pink Floyd's 'Dark Side of the Moon' and the 'Saturday Night Fever' soundtrack have been preserved by the US Library of Congress.
The iconic albums are among this year's selection of audio recordings to be enshrined in the Library of Congress' National Recording Registry, which annually honours 25 recordings which are ''culturally, historically or aesthetically significant''.
Other selections include Jimmie Davis' 'You Are My Sunshine', which was released in 1940, Chubby Checker's 'The Twist' from 1960, Simon & Garfunkel's 1966 record 'Sounds of Silence' and 1976's self titled first album by The Ramones.
Barry Gibb, whose band Bee Gees provided many the seminal 'Saturday Night Fever' soundtrack, released in 1977, said in a statement: ''I share this achievement with millions of fans worldwide who, for more than 35 years, have committed the music of 'Saturday Night Fever' to the soundtrack of their lives.
''I share this honour in joyful memory of my brothers - Maurice, Robin and Andy - and wish to convey the heartfelt gratitude of myself and each of our families.''
Under the National Recording Preservation Act of 2000, the Library of Congress preserves 25 recordings, ranging from music to spoken-word, in the National Recording Registry. There are currently 375 entries to the list.
Recordings must be of significance to the United States and must be at least 10 years old to be eligible.