This evening I assembled the left wing skeleton (main and rear spars to the ribs) and began final drilling the rivet holes for rib-to-spar attachment. It was inspiring to see the whole wing clecoed together. Here are some shots from this session:
In the first image, you can see the main ribs connecting the main and rear spars together. The four ribs closest to the camera that are set close together make up the wing-walk. This is the reinforced part of the wing where the occupants step to get in and out of the cockpit.