Matakishi has some instructions with photos for making World War II era buildings out of sheets of cork.
WWII
Blitz Miniatures Rules For London Firefighting 1940 – 1941
From Jim Wallman comes Blitz, one of the more imaginative miniatures rules sets I have encountered. In it, you command squads of firefighters coping with the dangers of the London Blitz of 1940 – 1941.
WRG 1925 – 1950 Armor and Infantry Rules
The Wayback machine has stored a copy of the WRG 1925 to 1950 armor and infantry rules from 1973.
Micro Armor Devastation
Micro Armor Devastation is a set of fast play miniatures rules for land and air combat from World War II onward. They’re very nicely done in a pdf format.
Battle For Moscow Free WWII Board Game
Years ago, GDW used to hand out copies of a simple Frank Chadwick game called Battle for Moscow. I’ve got a copy, and have used it to introduce players to board style hex wargaming. If you dont’ have a copy of this classic, you can download it here.