I've removed links to PDFs of my published fiction for now. Some may be restored in the near future. I figured the time will come, soon enough, when the "Old Man" stories, at least, should be collected and purchasable.
The next prequel, "Unearthed," will appear in the September 2012 issue of Asimov's Science Fiction, available in late July. One more story (the fourth) will follow, a sequel to the original "Helping Them Take the Old Man Down." That should appear sometime in 2013. The working title keeps changing.