of course, my pleasure! Missionary biographies are so edifying to read.
you metioned Piper, here's a biography of David Brainerd, missionary to the Native Americans at Crossweeksung New Jersey, this is a wonderful teaching John wrote about David:
[url=http://www.desiringgod.org/ResourceLibrary/Biographies/1461_Oh_That_I_May_Never_Loiter_On_My_Heavenly_Journey/]David Brainerd-Oh, that I may not loiter on my Heavenly Journey![/url]
I highly reccommend "The Life of Brainerd", its Brainerd's private journals that Jonathan Edwards published after David went to be with the Lord at 29 from TB, David didnt want these journals published, they were private, but Edwards implored him in the Lord, that his journals would lift the spirits of other struggling lonely saints in the mission field and Praise God!, they have, to this day, the Life of Brainerd has never been out of print.
here's another website, its the "mother lode" so to speak:
[url=http://www.wholesomewords.org/biography/bio.html]Wholesome Word-Missionary biographies[/url]
if you actually want to purchase missionary biographies, here's a brother in Christ, who maintains one of the best Ebay bookstores, where you can buy old and rare missionary biographies, as well as other rare books of the faith, his store is called "Dust and Ashes". I have done much business with him, and his reputation is impeccable.
[url=http://shop.ebay.com/merchant/www.dustandashes-dot-com_W0QQ_nkwZQQ_armrsZ1QQ_fromZQQ_ipgZ]Dust and Ashes Ebay bookstore[/url]
One cavaet- if the book is rare and in demand, the bidding can get quite spirited.
If you desire to "thank me", please do this, my next post is a prayer request for my dear son, "Please pray for a young Patriot", if you could cover him in prayer, I would be in your debt, beloved.
in Jesus' love, neil