For some time now, images of the Aleppo Codex (כתר ארם־צובה) have been available online. The website is very well done, with access to high resolution photos of all existing pages of this valuable witness to the Masoretic text. Now, thanks to Pasquale Amicarelli, BibleWorks users can access these photos from their Resource Summary Window with a new CHM module. Users MUST have an active internet connection to access to each photograph. Keep in mind that the text is not complete, as the Wikipedia entry mentions:
[The b]eginning and end of the manuscript are missing, as well as some pages in between. The current text starts with the last word of Deuteronomy 28:17 (ומשארתך, "and your kneading trough"). After that, the books Joshua, Judges, 1 Samuel, 2 Samuel, 1 Kings, 2 Kings, Isaiah, Jeremiah, Ezekiel, Hosea, Joel, Amos, Micah, Nahum, Habakkuk, Zephaniah, Zechariah, Malachi, 1 Chronicles, 2 Chronicles, Psalms, Job, Proverbs, Ruth, Song of Songs follow. The last leaf ends with בנות ציון in Song of Songs 3:11 ("come out, you daughters of Zion...") The missing parts are the end of the Song of Songs, Ecclesiastes, Lamentations, Esther, Daniel and Ezra/Nehemiah.
The Bible-Researcher website has an excellent introduction to the Aleppo Codex. See also the Wikipedia article.

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