Brief von Popper, Karl R. an Schrödinger, Erwin (o.O., [1955])

Brief von Schrödinger, Erwin an Thirring, Hans (o.O., 1950-12-27)

Brief von Schrödinger, Erwin an Thirring, Hans (o.O., 1953-08-20)

Brief von Schrödinger, Erwin an Thirring, Hans (o.O., 1956-03-11)

Brief von Schrödinger, Erwin an Grinter, L.E. (o.O. [Dublin], 1946-12-01)

Brief von Schrödinger, Erwin an Thirring, Hans (o.O., 1951-08-27)

Brief von Schrödinger, Erwin an Thirring, Hans (o.O., 1954-09-06)