Very occasionally updated here. Previously hosted at http://bdhurkett.wordpress.com.
The main pages (autogenerated) are
here gone until I fix up some errors and improve source information, i.e. it became a huge mess and I need to start the project from scratch, i.e. it's not likely to return in the foreseeable future. A 'family tree' graph was also here, and is likewise gone. Soon to come... maybe. Nope! Check out http://www.cowirrie.com/stepscape/ instead.