Canning Squash

Joe went hunting over at Ed's a few weeks ago, and apparently Ed slipped a banana box full of winter squash into the truck before he came home.  We ate a bunch of it, and I thought about freezing some of it too, but what if some crazy catastrophe should wipe out our ability to freeze anything, and I can't use my freezer anymore?  Say, for example, we lose electricity forever, or a virus hits and destroys all major appliance brands, or we learn that ice is found to cause horrible diseases.  Don't fret!  I know how to use a pressure cooker!  And stuff looks way prettier in jars anyway, as if you didn't know this already.