I dug briefly yesterday, but I'll try to put together another post later - just on the basics of canning - especially the non-USDA-approved methods that I've tried. BUT, if you're on Facebook, I highly recommend the groups called "rebel canners" and "outlaw canners." They have huge numbers of files that you can look at.

It's a little difficult to find this info (at least in English - I haven't looked elsewhere) because the USDA mantra is so entrenched in everyone now, but our great-grandmothers waterbathed everything!