Hmmm... I searched for the pattern and found a workshop on it and it includes the supply list with yardage.
http://www.calicocarriage.com/images...20Workshop.pdf
The charge for the workshop is $400 for one day, $650 for two days, $850 for three days. I don't understand why someone would pay that much for a workshop on it. All it is is HSTs. This is a very simple pattern and pretty easy to put together.