 In the summer of 1966 Abdus Salam invited Sachs to spend a few months at the International Centre for Theoretical Physics, in Trieste, Italy.During this time Sachs published the details of his formal structure of quantum mechanics from a generally covariant field theory of inertia in the Italian journal, "Il Nuovo Cimento".In the Autumn of 1966 he was appointed Professor of Physics at State University of New York at Buffalo.