This is a 3.1GB collection of pdfs, that are a gift from VT to Site Supporters.
Become a Site Supporter here: https://www.survivalmonkey.com/account/upgrades
Download the .zip file and extract.
Oh, the 'download via external site' is still SM, the file is just too large to place into the forum system. If you hover over the button you'll see that the download url is still on SM.
Some of the files and categories:
VT's Mega DVD of PDFs.zip 2015-01-29
VT's Mega DVD of PDFs in ZIP format