About the time Dennis obtained his version of "Dover Origins" I was sent a copy of it from a different source. Dennis sent me a copy of his that came about the same time. They were not the same!!!!! The one I had was even longer and had even more stuff added to it. It had taken on a life of it's own. Before you all get busy adding all of this new data into your computer, I will warn you, there is a large amount of incorrect data in both of the "Dover Origins" in the placement of children and families. I do not know who did the work on the second version. My copy did not have any author listed. All I can tell you is be aware that before you accept a source of information, you need to verify this data for yourself. Sharon S