From http://haydock1859.tripod.com/

This Catholic Bible commentary, following the Douay-Rheims Bible text, was originally compiled by Catholic priest and biblical scholar Rev. George Leo Haydock (1774-1849).  This transcription is based on Haydock's notes as they appear in the 1859 edition of Haydock's Catholic Family Bible and Commentary printed by Edward Dunigan and Brother, New York, New York.

Agreed. What a resource this would be. I believe there are no licencing issues. A hard copy version can sell for $100. I asked a developer to create this one including notes for my Kindle. It cost $50. The develpper sells it for $3.99 a copy.