Quinn, Daniel. After Dachau
Divergence: 1942 CE
What if: Nazi Germany developed the atomic bomb and used it to force a truce with the US. Subsequently, Nazi ideas on race began to dominate political thought in America.
Summary: A researcher into reincarnation finds a possible subject, who it turns out was in a previous life was a member of a "mongrel race", living in New York.
Published: Context 2001 (189395613XBUY), 2002 (1893956237BUY); Steerforth 2006 (1581952155).