Mark took mahasamadhi at 8:32 P.M., C.S.T. on Friday, February 19, 2010 in a hospital north of Houston, Texas.
Mark was born on October 14, 1946 and died on February 19, 2010.
He was sober from October 19, 1982 to February 19, 2010.
As most know, Mark was an unequaled master at moving persons to the spiritual level on the "path."
A lasting part of his legacy to those suffering from addiction is the content of the book "A Twelve-Step Journey to SELF-Transformation" which Mark and Floyd co-authored. Among other things, the book provides - in his own words - the exact, clear-cut way that Mark took protégés through the twelve steps.
Together, at the time of Mark's demise, the two had taken over 20,000 people through the Twelve Steps.