I've finished writing Purchas #4. A week or two to let it settle, and then I'll start posting it. This completes the present story arc. Maybe there'll be more Purchas stories, maybe not. The way I'm seeing it now, Purchas, Her Pilgrimage isn't a series of four short books, but one very big book in four sections.
I'll be sorry to take my leave of these characters. I've grown very fond of them.