David, I just took a quick look and have not read the whole thing, but I found something in the first paragraph that would cause a problem. Here's what you have there:
<ref>Davis, Harold A.,
<ref>An International Community on the St. Croix (1604-1930), Maine Studies no. 64, University of Maine at Orono, Maine, 1974, p. 125: </ref>
The first <ref> was not closed before the second was opened. You probably want to remove the <ref> that is before "An invitation ...", since it is a continuation of the citation you started with the name of the author.
Tags that mark a section of text that they operate on have a start and end version, which must be used to mark the content on which they operate. End tags always are the same as start tags except with an extra slash before them - thus <ref> followed by the citation and ended with </ref>. If you forget an end tag then the computer thinks everything you type after the start tag is all part of the same citation and will not display it in the biography, but will bunch it all together in the citation. Who ever said computers are smart??????