For those castle builders out there I wanted to put something up for you you may like to check out. I read it back in 2001 or 2002. This book includes tons of pictures and drawings with floor plans which helps with building for sure. It also includes a fair deal of the small castles, (which likely out numbered the big ones BTW), making it easier with those with smaller numbers of bricks to get some good inspiration for new ideas and MOCs.
http://www.amazon.com/Medieval-Fortress ... 1580970621