The Gutenberg Bible

The Gutenberg Bible, initially priced at $14.34 in 1987 (inflation-adjusted: $12 million), pioneered movable metal type printing in 1455, igniting the Gutenberg Revolution and the era of printed books in the western world.

Birds of America

Priced at $11.5 million (inflation-adjusted: $13.5 million), "The Birds of America" by John James Audubon, published in 1827, depicts extinct American bird species, with only 119 copies in existence.

Rothschild Prayerbook

The Rothschild Prayerbook, acquired for $13.6 million (inflation-adjusted: $14.6 million in 2013), stands among the world's priciest books, a medieval Christian devotional masterpiece.

The Cuthbert Gospel

the British Library in 2012 for $14 million (inflation-adjusted: $15.95 million), the St. Cuthbert Gospel is the oldest preserved European book, an exquisitely adorned Latin pocket gospel from the 8th century.

The Bay Psalm Book

The Bay Psalm Book, acquired for $14.2 million (inflation-adjusted: $15.46 million), ranks fifth among the world's priciest books, the first printed in British North America in 1640,

Magna Carta

billionaire Ross Perot for an astonishing $24.5 million (inflation-adjusted: $26.9 million), the Magna Carta from 1215 remains historic and unique.

The Gospels of Henry the Lion

Acquired by the German government for an astounding $28 million (inflation-adjusted: $30.73 million) at a 1983 auction, the Gospels of Henry the Lion is a 12th-century

Codex Leicester Leonardo Da Vinci

The Codex Leicester, purchased by Bill Gates for an astonishing $30.8 million (inflation-adjusted: $54.4 million), ranks as the second priciest book worldwide.

The Book of Mormon

"The Book of Mormon," originally priced at $35 million (inflation-adjusted: $37.35 million), stands as the world's most valuable book ever sold.