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Songs of Innocence and of Experience, copy F,
1789, 1794 (Yale Center for British Art): electronic edition 
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Songs of Innocence and of Experience, copy AA,
1826 (The Fitzwilliam Museum): electronic edition 
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Songs of Innocence, copy B,
1789 (Library of Congress): electronic edition 
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Songs of Innocence, copy G,
1789 (Yale Center for British Art): electronic edition 
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Songs of Innocence, copy U,
1789 (The Houghton Library): electronic edition 
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