Drug supplier Kirk Radomski has provided documentary evidence to the government showing that he shipped drugs to the Texas home of Roger Clemens, who is under investigation for perjury after telling Congress he never used steroids or human growth hormone. According to sources with close knowledge of the investigation, Radomski has discovered shipping receipts for a package of two kits of human growth hormone that he sent in late 2002 or 2003 to Clemens at the pitcher's mansion in Houston.