The Problems of the Afterlife by Samuel Fisk
Fisk has written a short but solid study of the theology of Hell. He manages, in less than one hundred pages, to successfully combat some of the important challenges to the traditional view of hell including universalism, annihilation and attempts to distort the meaning of the words “eternal” and “destruction.”
Fisk’s little book is thoroughly biblical, well researched and documented, filled with excellent quotes and supplies a good bibliography. Quite an order for such a small book.