When we think of a writer at work, we think of a solitary engagement with pen, or typewriter, or computer keyboard, conducted in a private place, devoid, if possible, of ambient noise and external distractions. But starting on Wednesday morning, October 10, Maureen Cummins will be engaged in writing a work of nonfiction in full public view, seated in the window of Pig Bar & Grill on Partition Street in Saugerties.