Below, I have collected the links on my blog dealing with my Holmes expansion project, a completed edit of the original D&D rules plus Greyhawk:
Men & Magic:
Monsters & Treasure:
The Underworld & Wilderness Adventures:
For those of you wishing to download a copy of my Holmes Expanded Rulebook for personal use, you may do so, here. At 96 pages (not counting the cover and back page) it's exactly double the length of the original Holmes Basic Rulebook.