Updated Keil and Delitzsch and Calvin Commentaries
Updated versions of Keil and Delitzsch OT and Calvin's Commentaries are available at:
Keil and Delitzsch now include the additional pages mentioned by Adelphos (introductory chapters to the books of Moses, the Prophets etc.). You may need to install the attached fonts to get these pages to display the Greek and Hebrew correctly.
The updated Calvin's Commentaries simply corrects a few minor errors.