I found this article in the NY Times archive. it's about an MIT scientist researching a substitute for heating with coal.
http://query.nytimes.com/gst/abstract.html?res=9D00E6DA1F39E733A2575AC2A9649D946397D6CF
check out the prices: $10 per cord for wood, $0.12 per gallon for oil
http://query.nytimes.com/gst/abstract.html?res=9D00E6DA1F39E733A2575AC2A9649D946397D6CF
check out the prices: $10 per cord for wood, $0.12 per gallon for oil