Never had the dimensions of the house measured unfortunately. The windows were constructed with secondary storm windows which are crank operated. Cranks are all busted and are the originals that came with it in 1959.How large is the house? Can you afford or can you borrow one or two window units sufficient to keep a couple of rooms livable?
I was able to pick up a second window unit for my apartment off a local buy and sell page for $100. It was nearly new. My apartment is about 800 square feet, and it's very nice indoors.