“Servant on the Edge of History,” Sam’s first book, was published in 2005 and has sold more than 20,000 copies. In this book, Sam documents many of his experiences throughout his missionary career, including the darkest days of the Vietnam War. Few people had the mettle to sit tight in the face of such danger, but Sam and his family, along with a handful of other missionary families, did just that. Their tenacity will inspire you. Their commitment will humble you. Their love will overwhelm you.