The Rare Book and Special Collections Division of the Library of Congress has an active digitization program, sharing thousands of its treasures online for users all over the world. Their most recent announcement highlights digital additions to the Lessing J. Rosenwald Collection.
The Rosenwald Collection’s greatest strengths are in the fifteenth century woodcut books, early sixteenth-century illustrated books, William Blake, and twentieth-century livres des peintres. The late Mr. Rosenwald sought books produced by the earliest printers and outstanding presses of later periods, and books on the following subjects: science, calligraphy, botany, and chess. The catalog describing the collection published in 1978 contains 2,653 entries, many for books represented by more than one copy. The online list of items are organized by category and Rosenwald catalog number.