Two new books about American Tour de France winners are due to hit the shelves next week, and both are expected to cause a stir.

Ballantine Books, an imprint of the Random House Publishing Group, is publishing “From Lance to Landis: Inside the American Doping Controversy at the Tour de France,” which will be available on June 26.

The book is written by award-winning journalist David Walsh, who is poised to return to his position as chief sports writer with The Sunday Times of London in August. Walsh is a four-time Irish Sportswriter of the Year, three-time UK Sportswriter of the Year, and author of the controversial book about Lance Armstrong “L.A. Confidential,” which was never published in the U.S. or the U.K.

Ballantine says that “From Lance to Landis” is a “meticulous and exhaustive account of the doping scandal that has damaged the credibility of the Tour de France and professional cycling.”

The book goes on sale less than two weeks before the start of the 2007 Tour de France. ESPN Magazine will run a first serial excerpt in their July 2 issue, on newsstands on June 21.

Walsh has spent eight years investigating the doping allegations and has on-the-record testimony of numerous named sources, including friends, team management, riders, government officials, and adversaries within the cycling community.

The result, Ballantine says, is an account “from deep inside the sport, covering the charges, the admissions and the denials, which riders have been accused and the elaborate and scientific methods available to riders who want to beat the system.”

As seen by Walsh, The Tour de France is riddled with admitted dopers and those who contest positive doping results and deny use.

"I have spent 15 years following the sport as a writer and a fan," said Walsh. "In 1998 our eyes were opened to the reality of a deeply-rooted and sophisticated culture of doping in professional cycling. A year later Lance Armstrong won the Tour de France and we were told a new and better era had begun. Since then, I have spent seven years asking questions and pursuing the truth, and this book is the fruit of that pursuit."

Also available on June 26 will be “Positively False: The Real Story of How I Won the Tour de France,” by Floyd Landis with Loren Mooney.

Published by Simon Spotlight Entertainment, “Positively False” is Landis’s story, from his upbringing as a Mennonite to his perspective of his positive doping result at the 2006 Tour de France.

“‘Positively False’ is at once a memoir and a powerful indictment of the unchecked governing bodies of cycling that have compromised the integrity of the sport as a whole,” according to promotional information on Simon Spotlight’s Web site.

The book also contains an epilogue that touches on Landis’s recent USADA arbitration hearing, and the controversial phone exchange that took place between Will Geoghegan, his former manager, and three-time Tour de France champion Greg LeMond.

Edward Wyatt of The New York Times reports that in the book Landis appears to contradict some of his testimony given at the arbitration hearing. In the epilogue Landis writes that he was so shocked by Geoghegan’s attempt to blackmail Lemond that he immediately decided Geoghegan should be fired.

“The only thing I knew right away was that Will needed to go,” Landis writes. “I went to his room and helped him pack his things.”

Yet Geoghegan sat with Landis’s defense team the following day, and was only fired following LeMond’s testimony and accusations of blackmail and harassment.

Upon the book’s release Landis will embark on a book-signing tour throughout North America, beginning in New York City on June 27 and ending in Southern California on July 19.

Look for book reviews of both “From Lance to Landis” and “Positively False” in upcoming issues of VeloNews.