I have been searching for books/guides etc for modeling the old west. Two I have found most helpful are Knuckleduster's Cowtown Chronicles and Modeling the Old West. Cowtown is great for planning towns and buildings. Modeling the Old West (White River Publishing, $15.95) is the only book I have found that gives history and measured drawings for buildings of the Old West. The book is meant for model railroaders so some of the buildings are geared for that, but most are of general use to gamers. The book has drawings for over twenty buildings all of them scanned from Model Railroad Craftsman. Unfortunately, nearly a third of the scans are nearly unreadable the rest are fine. Useful details for buildings include an 1874 firehouse, water mill, grain mill, gold mine, loads of stores and a small stockyard.
I have a bunch of old west books with photos but, nothing else that has measured drawings or is geared toward modelers. If you know of any good books/booklets that I can continue to build my western town (closing on 30 buildings if I include the adobe) please post it here.