The Isaiah manuscript A is one of the seven scrolls discovered in Qumran in 1947. It is the largest and best preserved scroll, and represents the only biblical book that has survived in its entirety. The fifty-four columns contain all sixty-six chapters, without a marked division between what modern scholarship regards as First and Second Isaiah. The scroll is one of the oldest Dead Sea Scrolls - it dates from about 100 BCE and is older by about one thousand years than the oldest biblical manuscripts (such as the Aleppo Codex) known prior to the Qumran finds. The text, which is written clearly enough to be understood immediately by readers of modern Hebrew, substantiates to a remarkable degree the wording and orthography of medieval manuscripts.
Pearlman, Moshe, The Dead Sea Scrolls in the Shrine of the Book, The Israel Museum, Jerusalem, 1988, English / Hebrew
The Israel Museum, Publisher: Harry N. Abrams, Inc., 2005
Zalmona, Yigal, ed., The Israel Museum at 40: Masterworks of Beauty and Sanctity, The Israel Museum, Jerusalem, 2005