Incorrect order of refernces in library

I added a new reference with the author name American.  It is placed into the references that all start with R.  Every new refernce I add is being randomly inserted into my library without regard to the author name.  In addition, all of the references are bold font except all of the new ones, which are in standard font.  Any idea what is happening?

Click the top (Author) heading and it will sort according to that field.  The bolding is probably a setting having to do with read/unread status preferences, which I turn off.  (see attached image of preferences options)