Iron Butterfly – Ball (1969, Reel-To-Reel) - Discogs

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Iron Butterfly – Ball (1969, Vinyl) - Discogs

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Iron Butterfly – In-A-Gadda-Da-Vida (1971, Vinyl) - Discogs

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Rockasteria: Iron Butterfly - Ball (1969 us, great 3rd album, 2006 japan SHM remastered)