Toposolatario offers IKubes — paper models of mass produced building modules from the distant future. You can quickly make a few dozen of these in different colors and decorations to completely fill a game table.
The Miniature Wargaming Editor
Death before Distemper Science Fiction Rules
Death Before Distemper is a set of free wargames rules for science fiction platoon level games.
Wargames Journal Issue 3
The third issue of the excellent Wargames Journal, from January 2006, has been archived.
Britain’s Bloody Crown: The Mad King
This episode is an interesting look at how Henry VI’s psyche led to the Wars of the Roses
Roman Villa Paper Model
This free paper model of a Roman villa seems to be somewhere between 15mm and 20mm size. You could scale it on your printer, though to make it work in other sizes.