The Vintage paperback edition of Letter to a Christian Nation is now available on Amazon. This edition has a new, twenty-page Afterword.

All books purchased through the above link will help support the work of Sam's new foundation, The Reason Project, whose advisory board now includes: Peter Atkins, Jerry Coyne, Richard Dawkins, Daniel Dennett, Rebecca Goldstein, Ayaan Hirsi Ali, Harry Kroto, Steven Pinker, Lee Silver, Ibn Warraq, and Steven Weinberg.