the Paul Clark Tavern at the corner of Madison Avenue and Lark Street, the site was excavated further and I noticed this brick structure. This week, I finally got a chance to poke my camera through the fence surrounding the construction area.
Don Rittner has some suggestions as to what it might have been in his excellent post, What Happened To Paul Clark's Corner?
The brick building in the background is the former Metroland office, now being converted to condos.
Also: Paul Clark's gravestone