The Marilyn Laszlo story is one of these. I first heard about her life and ministry on the Oh LORD, May You Open Wide Our Hearts! blog of an unknown missionary serving somewhere in ???
To learn more about the Marilyn Laszlo story, here are a couple of books:
A is for Airstrip: A Missionary's Jungle Adventure.
Her blog (though a bit in need of updating!) is: Missionary Moment with Marilyn Laszlo.
To hear an audio message by Marilyn click here.