www.vitamix.com/us/en_us/articles/preserving-the-harvest-best-fruits-and-vegetables-for-canning
www.stockdales.com/product/presto-pressure-canner/
extension.sdstate.edu/testing-dial-pressure-canner-gauges
www.youtube.com/watch?v=E6P1sYZzb3M
www.ebay.com/p/11030314417
