Martin Luther King, Jr.

Nobel Peace Prize-winning civil rights activist
"Racial Discrimination," 03/24/1963

Garrison Keillor

host of A Prairie Home Companion
“Pontoon: A Lake Wobegon Story”, 09/17/2007

Al Gore

Nobel Peace Prize winner and former Vice President of the United States
“Earth in the Balance: The Environmental Crisis for Our Nation and Our World," 04/05/1992