Scenic Resources
Here are some useful Scenic Art resources:
Scenic Art and Construction: A Practical Guide
Scenery: Draughting and Construction: For Theatres, Museums, Exhibitions and Trade Shows
Scene Painting Projects for the Theatre
YouTube videos
John N. Stewart 25 years of Scenic Art part i
John N. Stewart 25 years of Scenic Art part ii
Web Resources
Scenic Artists Forum - you need to apply to join this forum, but it is very useful