The ISBN system was devised beginning in 1967, and books published prior to then don't have "editions" associated with them. It's very similar with movie, music and video game UPCs. It's also possible that a seller listed an item with us and didn't include an ISBN/UPC with the listing. You'll find items like this by clicking this link.
O'Reilly's insight into all the details leading up to the assassination of President Abraham Lincoln shows the research detail that went into writing this book. I learned things I had never learned in History class from this book.
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