Firstly did you know that "Stones in the Road" was written for and first recorded by Joan Baez -- available on LP too on her "Play me Backwards" disc?
And here's a great version of them singing it together
Which is very reminiscent of the version form MCC's live CD "Party Doll" which I use as a test track for live sounding band play
Among Mary Chapin's other CD only releases my favorite is "Between Here and Gone" with "Goodnight America" an excellent test of a system's ability to cope with a well produced but busy mix and "Grand Central Station" just a deeply moving song ....