How to Create Custom Textures in Hammer Source by Keith Garry
Steam Workshop::Proper Dev Measure textures | Mapping Resource
Hammer Tutorial #7 | Custom Textures - YouTube
Half-Life 2 Texture Pack (Mod) for Left 4 Dead 2 - GameMaps.com
L4D themed map for Gmod. I Need both a light_env and light_directional but light_directional is "obsolete" in Gmod's hammer and the lighting is bad. How would I fix this? : r/hammer
L4D Level Design/Versus Maps - Valve Developer Community
Left 4 Dead Authoring Tools | Left 4 Dead Wiki | Fandom
Steam Community :: Guide :: How to Mod Textures
L4D Level Design/Level Standards - Valve Developer Community