Working on flood damaged buildings that appear to be ones possibly constructed by Bohemian carpenters, we discovered interior walls covered floor to ceiling with lapped siding or rough flooring boards. Later they are covered in plaster and lath. We are wondering if this was something of a immigrant technique to create a quick interior wall for less money, or if this was something brought from Europe? Often they are covered in wall paper, so it appears it was sometime before they were lathed. Whatever the case, these homes and businesses withstood a considerable amount of distructive force without collapse. We had one building that floated away folded over a twelve inch diameter tree and ran head long into the side of one two story comercial building and it didn't even budge! All these buldings were built in the 1890's any thoughts?