Cover art
Gribbin, John. Timeswitch. PS Publishing 2009.

Gribbin, John. Timeswitch
Divergence: 1066 CE
What if: Harold Godwinson defeated William the Bastard at Hastings.
Summary: A time traveler from the 20th century fights to save history. But which history?
Published: PS Publishing 2009 (1906301611BUY, 190630162XBUY).