The Spirit of Swiftwater: 100 Years at the Pocono Labs is a book written by Jeff Widmer and published in 1998 by the University of Scranton Press, Scranton, Pa. The book surveys the history of vaccine development in the United States from 1887-1987 through the eyes of the men and women who worked at what is now Sanofi Pasteur, the biologics division of Sanofi Aventis. The Spirit of Swiftwater was Widmer's first book. His second, One in a Million, is the ghostwritten autobiography of nurse and medical entrepreneur Mary G. Clark of Clarks Summit, Pa.