Hi all,If you're into eBooks (for Kindle) and looking for some great Classic Christian ones, check out:http://christianclassicbooks.blogspot.com/p/title.html They've got a 7-in-1 book of Catherine Booth (only $4.00 I think), which includes "Aggressive Christianity" as well as many others. Also, William Booth's hard-to-find "The Seven Spirits" (under $3.00).Plus they have some great collections on Revival, Prayer, Power, etc.I've got their book "The 7 Top Prayer Classics" - and it's fantastic! (Under $5.00 for 7 books).Hope this helps,Jon