Mark Stephen Singel (born September 12 1953, in Johnstown, Pennsylvania) served as the Democratic lieutenant governor of Pennsylvania from 1987 to 1995 under Robert P. Casey, Sr. He was acting governor from June 14, 1993 to December 13, 1993 during Casey's lengthy battle with amyloidosis and subsequent multiple organ transplant. A graduate of Pennsylvania State University, Singel was elected to the Pennsylvania State Senate in 1980. Wikipedia
The definitive Wikipedia entry for Mark Singel. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Mark_Singel
