Discovered this lovely Peugeot mixte for just down the road in Cambridge... I emailed the Craigslist seller a while ago and just heard from him today. Seems he was travelling and only turned up today with a queue of people wanting to see the bike. Remarkably, he was on his way to Arlington today, so we met behind Panero's and did the deal! It's ready to ride, though I would like to swap out the seat and wheels, and add a rack - all from other bikes I've scavenged!