Foster, Alan Dean. Parallelities
Summary: A tabloid newspaper reporter interviewing a weird scientist is affected by an experiment gone awry and uncontrollably pops from parallel world to parallel world.
Comments: Only one or two of these worlds are historically different, and detail about them is minimal.
Published: Ballantine/Del Rey 1998 (0345424611BUY); SFBC 1998 (1568659482).