Here is a list of books that address the myth of Christianity. This is not my bibliography but one that was sent to me from a email membership on the subject. I have put an asterisk by the ones I recommend.
THE PAGAN JESUS
The Jesus Puzzle. Did Christianity Begin with a Mythical Christ?
:Challenging the Existence of an Historical Jesus
Earl Doherty
Canadian Humanist Publications; October 19; 1999
ISBN: 0968601405 (Paperback)
*The Christ Conspiracy: The Greatest Story Ever Sold
Acharya S
Adventures Unlimited Press; September 1999
ISBN: 0932813747 (Paperback)
Pagan Christs: Studies in Comparative Hierology
John M. Robertson
Kessinger Publishing Company; August 2003
ISBN: 0766180190 (Paperback)
*Jesus Mysteries: Was the "Original Jesus" a Pagan God?
Timothy Freke; Peter Gandy
Crown Publishing Group; September 2001
ISBN: 060980798 (Paperback)
World's Sixteen Crucified Saviors
Kersey Graves; Foreword by Paul Tice
The Book Tree; July 1999
ISBN: 1585090182 (Paperback)
Aryan Sun-Myths the Origin of Religions (1889)
Charles Morris
Kessinger Publishing Company; April 1996
ISBN: 1564598934 (Paperback)
Jesus: Pagan Christ or Jewish Messiah?
Laurence E. Dalton; Shirley Strutton Dalton
Xlibris Corporation; December 2000
ISBN: 073883369X (Paperback)
The Book Your Church Doesn't Want You to Read
Tim C. Leedom (Editor); Bill Jenkins (Introduction)
Truth Seeker Company Inc; July 1993
ISBN: 0939040158 (Paperback)
Astrological Foundation of the Christ Myth; Vol. 2
Malik H. Jabbar
Rare Books Distributors; August 1997
ISBN: 1571540032 (Paperback)
The Woman's Encyclopedia of Myths and Secrets
Barbara G. Walker
HarperCollins Publishers; November 1983
ISBN: 006250925X (Paperback)
HISTORACITY OF JESUS & ORIGIN OF THE CHRISTIAN BIBLE
You Take Jesus, I'll Take God: How to Refute Christian Missionaries
Samuel Levine
Hamoroh Press; June 1980
ISBN: 0960475419 (Paperback)
Judaism's Truth Answers the Missionaries
by Beth Moshe
Bloch Pub Co; May 1997
ISBN: 0819705152 (Paperback)
ISBN: 0819705209 (Hardcover)
Antisemitism in the New Testament
Lillian C. Freudmann
Rowman & Littlefield; December 1993
ISBN: 0819192945 (Hardback)
ISBN: 0819192953 (Paperback)
Who Wrote the New Testament?: The Making of the Christian Myth
Burton L. MacK
HarperCollins; November 1995
ASIN: 0060655178 (Hardcover)
Harper San Francisco; September 1996
ISBN: 0060655186 (Paperback)
Faith Strengthened: The Jewish Answer to Christianity
by Isaac Troki (Author), Moses Mocatta (Translator)
KTAV Publishing House; June 1974
Out-of-Print
ASIN: B00005VV74
The Jesus Myth
George Albert Wells
Open Court Publishing Company; October 1998
ISBN: 0812693922 (Paperback)
Did Jesus exist?
George Albert Wells
Elek; 1975
ASIN: 0236310011 (Paperback)
The Jesus of the Early Christians: a Study in Christian Origins
George Albert Wells
Pemberton; 1971
ASIN: 0301710147 (Unknown Binding)
Forgery in Christianity: A Documented Record of the Foundations of the Christian Religion
Joseph Wheless
Kessinger Publishing Company; March 1997
ISBN: 1564592251 (Paperback)
Putting Away Childish Things: The Virgin Birth, the Empty Tomb, and Other Fairy Tales You Don't Need to Believe to Have a Living Faith
by Uta Ranke-Heinemann, Peter Heinegg (Translator)
Publisher: HarperCollins; May 1994
ASIN: 0060668601 (Hardcover)
WHO WAS THE REAL PAUL
*The Mythmaker: Paul and the Invention of Christianity
Hyam Maccoby
Barnes & Noble; February 1998
ISBN: 0760707871 (Hardcover)
Paul and Hellenism
Hyam Z. Maccoby
Trinity Press International; February 1991
ISBN: 1563380145 (Paperback)
ASIN: 1563380145 (Paperback) (Out-of-print)
Paul: Follower of Jesus or Founder of Christianity?
David Wenham
Wm. B. Eerdmans Publishing Co; April 1995
ISBN: 0802801242 (Paperback)
THE PAGAN JESUS
The Jesus Puzzle. Did Christianity Begin with a Mythical Christ?
:Challenging the Existence of an Historical Jesus
Earl Doherty
Canadian Humanist Publications; October 19; 1999
ISBN: 0968601405 (Paperback)
*The Christ Conspiracy: The Greatest Story Ever Sold
Acharya S
Adventures Unlimited Press; September 1999
ISBN: 0932813747 (Paperback)
Pagan Christs: Studies in Comparative Hierology
John M. Robertson
Kessinger Publishing Company; August 2003
ISBN: 0766180190 (Paperback)
*Jesus Mysteries: Was the "Original Jesus" a Pagan God?
Timothy Freke; Peter Gandy
Crown Publishing Group; September 2001
ISBN: 060980798 (Paperback)
World's Sixteen Crucified Saviors
Kersey Graves; Foreword by Paul Tice
The Book Tree; July 1999
ISBN: 1585090182 (Paperback)
Aryan Sun-Myths the Origin of Religions (1889)
Charles Morris
Kessinger Publishing Company; April 1996
ISBN: 1564598934 (Paperback)
Jesus: Pagan Christ or Jewish Messiah?
Laurence E. Dalton; Shirley Strutton Dalton
Xlibris Corporation; December 2000
ISBN: 073883369X (Paperback)
The Book Your Church Doesn't Want You to Read
Tim C. Leedom (Editor); Bill Jenkins (Introduction)
Truth Seeker Company Inc; July 1993
ISBN: 0939040158 (Paperback)
Astrological Foundation of the Christ Myth; Vol. 2
Malik H. Jabbar
Rare Books Distributors; August 1997
ISBN: 1571540032 (Paperback)
The Woman's Encyclopedia of Myths and Secrets
Barbara G. Walker
HarperCollins Publishers; November 1983
ISBN: 006250925X (Paperback)
HISTORACITY OF JESUS & ORIGIN OF THE CHRISTIAN BIBLE
You Take Jesus, I'll Take God: How to Refute Christian Missionaries
Samuel Levine
Hamoroh Press; June 1980
ISBN: 0960475419 (Paperback)
Judaism's Truth Answers the Missionaries
by Beth Moshe
Bloch Pub Co; May 1997
ISBN: 0819705152 (Paperback)
ISBN: 0819705209 (Hardcover)
Antisemitism in the New Testament
Lillian C. Freudmann
Rowman & Littlefield; December 1993
ISBN: 0819192945 (Hardback)
ISBN: 0819192953 (Paperback)
Who Wrote the New Testament?: The Making of the Christian Myth
Burton L. MacK
HarperCollins; November 1995
ASIN: 0060655178 (Hardcover)
Harper San Francisco; September 1996
ISBN: 0060655186 (Paperback)
Faith Strengthened: The Jewish Answer to Christianity
by Isaac Troki (Author), Moses Mocatta (Translator)
KTAV Publishing House; June 1974
Out-of-Print
ASIN: B00005VV74
The Jesus Myth
George Albert Wells
Open Court Publishing Company; October 1998
ISBN: 0812693922 (Paperback)
Did Jesus exist?
George Albert Wells
Elek; 1975
ASIN: 0236310011 (Paperback)
The Jesus of the Early Christians: a Study in Christian Origins
George Albert Wells
Pemberton; 1971
ASIN: 0301710147 (Unknown Binding)
Forgery in Christianity: A Documented Record of the Foundations of the Christian Religion
Joseph Wheless
Kessinger Publishing Company; March 1997
ISBN: 1564592251 (Paperback)
Putting Away Childish Things: The Virgin Birth, the Empty Tomb, and Other Fairy Tales You Don't Need to Believe to Have a Living Faith
by Uta Ranke-Heinemann, Peter Heinegg (Translator)
Publisher: HarperCollins; May 1994
ASIN: 0060668601 (Hardcover)
WHO WAS THE REAL PAUL
*The Mythmaker: Paul and the Invention of Christianity
Hyam Maccoby
Barnes & Noble; February 1998
ISBN: 0760707871 (Hardcover)
Paul and Hellenism
Hyam Z. Maccoby
Trinity Press International; February 1991
ISBN: 1563380145 (Paperback)
ASIN: 1563380145 (Paperback) (Out-of-print)
Paul: Follower of Jesus or Founder of Christianity?
David Wenham
Wm. B. Eerdmans Publishing Co; April 1995
ISBN: 0802801242 (Paperback)