I forgot the ladder, so brave SIL made do with the window sill and some support from M. The room really warmed up with the cold sealed out, and we'll work on getting replacement windows - preferably steel-framed like the originals.
That's Jeep supervising from his warm corner. And C wields the vacuum, below. So at the end of the day we had windows plasticized, a classroom cleaned up, the pipes in the crawlspace scrutinized (all nicely heat-taped), the electrical tested and the pump poked at. We close up and head home. I'm tired from clumping to and from the pump house in the snow.