Terry,Two that I am personally interested in reading are both by Steven Nichols - 1) The Expository Genius of John Calvin & 2) The Unwavering Resolve of Jonathan Edwards.
Terry,In the past I have enjoyedIain Murray's Forgotten Spurgeon and Spurgeon v. Hyper Calvinism.Iain Murray is a great biographer...He has written an excellent work by Jonathan Edwards.I also like Steven Nichols works. He has written good ones on Martin Luther. The biographer that David is referring to is actually Steven Lawson--I too want to read those books David! Perhaps my favorite has been the Memoirs and Remains of McCheyne by Andrew Bonar. Also check out the Biographies I listed here