In 2005 he wrote the book: "Inside the Postal Bus", about his experiences at and the 2004 season whilst riding in support of Lance Armstrong. The work contains texts authored by some of his team mates, including George Hincapie. When the doping topic arises in the book, Barry vehemently denies having ever witnessed any drug intake in the team. He and his wife also wrote a training book. He also writes diary entries during his cycling season. His third book, "Le Metier", detailing the life of a cycling domestique, was published in 2010 by Rouleur.