A double-elephant folio (very large) first publication of James Audubon's "Birds of America" brought the highest price among books and other printed material auctioned this year.

It topped the American Exchange list of the highest 500 bids for books, manuscripts and ephemera sold ain North America and Europe. The Audubon went for $5,616,000.

It was followed by two 15th- and 16th-century Italian works, a 1459 colored manuscript of Virgil's "Aeneid" at $3,072,000 and a Doria Atlas from about 1570 with 188 maps at $2,664,000.
https://www.seattlepi.com/ae/books/article/Audubon-book-goes-for-big-bucks-1190828.php
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