Commonly sighted in the Bargain Book section of chains like Barnes & Noble or B. Dalton Booksellers. A reproduction of 19th-century Edward Hull's originals. Hull used Archbishop Usher's chronology to trace the history of mankind back to the Creation event, but I have a reasonable faith in the scholarly integrity of the non-Biblical portion of his World History.
I consulted the 'Chart when I wrote up the Roman Emperors and the Popes. Unfortunately, there are portions where the text is just illegible, or a name is not as complete as I would like. In such cases, I've left blanks or filled in what I could from other sources.