Record World (March 20, 1976) 
Record World (1976-03-20)
Record World (March 27, 1976) 
Record World (1976-03-27)
Record World (April 3, 1976) 
Record World (1976-04-03)
Record World (April 10, 1976) 
Record World (1976-04-10)

Record World (April 10, 1976) 
Record World (1976-04-10)a

Record World (May 29, 1976) 
Record World (1976-05-29)
 
Record World 
1976/06/19     194位 Natural Gas 初登場 
1976/06/26     191位 Natural Gas 
1976/07/03     182位 Natural Gas 
1976/07/10     170位 Natural Gas 
 
Record World (June 5, 1976) 
Record World (1976-06-05)

Record World (July 10, 1976) 
Record World (1976-07-10)
 
 
 
 [Magazine] Natural Gas / Billboard (March-September 1976) 
 [Magazine] Natural Gas / Cash Box (March-October 1976) 
 Natural Gas 
 [Magazine] 音楽専科 (1976年8月号) / Natural Gas インタビュー 
 Natural Gas (Gonzo: HST465CD) / Live From The Vault (Gonzo: HST467CD) 
 [Bootleg] Natural Gas / Live from the Vault (Aug 17, 1976) 
 [Can Badge Maker] Natural Gas 
 [Natural Gas の半分] Magnet / Worldwide Attraction (1979)