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Account of organs & organ builders / collected by Henry Leffler, 1800.
Ascribed possibly to both (James) Henry Leffler and his son Henry Leffler, p. 7.
Limited ed. of 200 copies.
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The Leffler manuscript by Henry Leffler. Published by British Institute of Organ Studies in 2010. Publication and catalogue information, links to buy online and reader comments.