I'm a bit late here, but thank you for all the effort put into this! I'll always appreciate the efforts of fellow HL fans when it comes to archiving and fixing stuff like this.
I've been into the HL2 beta stuff since 2007 or so and when I was about 11 years old, I got someone to send me the WC mappack through Youtube PMs (when they existed) and I spent so many hours exploring them, fixing textures, and adding in enemies and items before compiling in Hammer, just to have fun playing around with my own scenarios using Valve's unfinished map resources. My first video upload on YT in 2008 was also a Beta weapons showcase using Missing Information 1.4, and one of my favorite childhood gifts was a copy of "Raising The Bar" which I absolutely loved. Love this site in general, too. Happy to see this very specific niche has a site this good that has been up for so long. Thanks to everyone that's been running/maintaining this place!
Here's to the mysterious arrival of historic leaked game content! Crossing my fingers for HL3's beta one day :-)