Having worked with a fellow who helped upgrade the shack to the mansion, I know it doubled in size and really the only stuff left from the original shack is the area with the slanting floors on the lower level of the mansion. The gag features have changed over the years, but the attraction is a classic "gravity house." I have never seen an exterior shot of the shack. The photos you have seen are all of the different gags inside the structure. Funny to note the folks are all dressed in early 1960s dress, no one was "in theme" in these post card shots. Of course, at this time, SDC was kind of "old west" themed, the "ozarks" theme came about more strongly in the later 60s.
