Mark A. Hicks is an award-winning illustrator. Mark has been an admirer of John Wesley Powell's courage and determination since childhood. He is also an admirer of the Grand Canyon and its natural beauty. Mark was born and raised in Arizona and has visited the Grand Canyon often. You can visit his website at www.MARKIX.net to see more of his work. Donna E. Hicks is a writer and educator. She is also an admirer and explorer of the Grand Canyon.