Hi Lion,
Unlike the British DFC there is no roll for US awards. Their records department are helpful- freedom of information actually means something over there! They my be able to help although their main function is for US records- I’m not sure how foreign awards fit in.
Their details are at:
http://www.archives.gov/st-louis/military-personnel/index.html
All you could want to know about the US DFC can be found at:
http://www.dfcsociety.org/home_high.htm