Scortia, Thomas N. Artery of Fire
Divergence: 1945 CE
Summary: An attempt to transmit "Black Field" power from Pluto to Earth has disastrous crosstime potential, heading directly for Hiroshima 1945.
Published: Doubleday 1972 (0385086598) and Popular Library 1972 (0445005351) Revision of "Artery of Fire", in Original Science Fiction Stories, March 1960.