2024 HL1 MaxFile Leak
From Valve Cut Content
The HL1 MaxFile Leak or "Half-Life Animation Development Files Leak" is from the looks of it a earlier and way more stripped version of the HL:Source repo with 3D Studio Max project files preserved hence the name "MaxFile Leak".
Barney
Sculpt Barney
A high-quality sculpt version of Barney can be found in BARNEY-X_Import1.max.
It seems to be more based on his earlier "Ted Barney" look, though the head is clearly taken from Slick.
Wide Eyes Mesh
The 0.61 or commonly known as "Wide Eyes" Barneys mesh can be found in 75correctscale.max.