[Fred Nerks]

http://muhammadanism.org/Canon_Sell/default.htm
Edward Sell's Books including THE LIFE OF MUHAMMAD pdf downloads.

"In Spain a strict prohibition was issued against the study of Greek philosophy, and many valuable works were committed to the flames. Soon after the rule of the Moors Spain began to decline. The study of philosophy came to an end, and liberal culture sank under the pressure of the hard and fast dogmatic system of Islam." — p. 287-8. The Faith of Islam

[Nathan Zachary]

The correct "Life of Mohammad" book. The one and only prime source of information on Muhammad and the formation of Islam writtenby Ishaq. Ishaq's Sira, or Biography, is the ONLY record of muhammads life, and is which ALL other Islamic Scribes, such as Buhkari, Muslim (Buhkari's student)Hisham, Tabari etc. draw from.
It is called the "Sirat Rasul Allah" origionaly written by Ishaq in 750 ad, edited and abridged by Hisham in 830 AD, and translated into english by Alfred Guillaume under the title, The Life of Muhammad in 1955 by Oxford Press.

Referred to as the Sira, or Biography, Ishaq’s Hadith Collection is comprised of oral reports from Muhammad and his companions. It provides the only written account of Muhammad’s life and the formation of Islam composed within two centuries of the prophet’s death. There is no earlier or more accurate source.

It's in print and available for about 29$.

Much of it can be read here:

The Prophet of Doom