http://www.rexresearch.com/infolios/eeman.pdf
Read first from the 11th page onwards, you'll see why I'm posting this here. Eeman's discoveries brush so closely to what modern EFT books say. But he doesn't call it EFT, nor does he suggest tapping, but he devised interesting simple devices and methods to get rid of "neuro-muscular tensions". His discovery even includes a way to take drugs without decreasing the amount of drug, now I could imagine great appreciation for this technique in college dorms :)
"Any trauma, especially a psychological one, tends to set up a nervous muscular tension in some part of the body, which tension is unconscious, and a vicious cycle tends to set up ... Removal of the neuro-muscular tensions tends to an emergence of the buried memories which first produced them, together with the emotional content, which consists of the psychic energy repressed with the memory..."