My first official publication!

I've been having a bit of luck with half-dollar roll-hunting lately, and after finding my fifth 1977 D DDO-001 Kennedy Half, I decided to do a little research.  I suppose I got a bit carried away...because it turned into a full article! 

It was originally published on April 18, 2013 in The Exchange, the online blog of the American Numismatic Association (ANA.)  Here is a link to the article: