Red meat and eggs also contain iron, but it's a myth that they're the only good sources of it. (ubykotex.com)
Food processing causes enormous loss of magnesium in foods that are commonly fairly good sources of it, such as leafy greens, nuts, seeds and whole grains. (westonaprice.org)
Fermented vegetables, such as raw (unpasteurized) sauerkraut, kimchi, and pickles, are really good sources of them too. (transformedbyfood.com)