North campus sculpture
    On Sunday we took John and Otto with us on another letterboxing expedition, this time to North Campus.  It's become a very nice place in the 30 years or so since I saw it last.  Lots of sculpture.  This one is <a href="http://www.plantext.bf.umich.edu/planner/sculpture/north/triad.htm">"Triad Ritual."</a>