E.M. Wherry 
A Comprehensive Commentary on the Quran [PDF ebook] 
Comprising Sale’s Translation and Preliminary Discourse: Volume IV

This comprehensive set includes thorough examinations of the Qurán in Wherry”s essential four volume commentary. There is also an excellent overview of Islam by the well known scholar Edward Sell, The Faith of Islam which examines the history of Islam, the different forms of Islam and religious practice. This set will prove to be an excellent historical resource for anyone interested in western scholarship of Islamic doctrine, and the writings in the Qurán