Palladium Books also has a small book entitled Weapons and Castles of the Orient. My copy is 2nd edition from 1984. Pages 40 and 41 cover Himeji Castle in particular. Because of possible copyright issues, I won't post here. But I scanned in those two pages, and if you email me, I will send them to you (about 1meg for both jpg images). If you find them useful, you might check out the current edition (sells for $8.95USD, and I'm sure S/H is extra), though I don't know what changes they might have done to the book. Anyhow, replace the (at) with the usual symbol. You also might check books by David Macauley - he's done how-to books on building western castles, cathedrals, pyramids, etc. dannantavona(at)yahoo.com