I struggle to find Rosenblatts perceptron training algorithm in any of his publications from 1967 - 1951, namely:
 Principles of Neurodynamics: Perceptrons and the Theory of Brain Mechanisms
 The perceptron: A probabilistic model for information storage and organization in the brain.
 The Perceptron — A Perceiving and Recognizing Automaton
Does somebody know where to find the original learning formula?