Retrospect Publishing 
Pennsylvania Retrospective CD-ROM Series
Viewer Help Topics
  Item Correcting reversed images on printed pages.
  Item Using our CD-ROMs with Windows NT, 2000, XP or Vista.
  Item Using our CD-ROMs with Macintosh.
  Item Getting help with a problem.
  Item Installing  the Retrospector application from older CD-ROMs
  Item Ordering Updated Software