I had discussed on this site the fact that I could find no documentation to provide Joslin for my 50 year medal.
Richard, and others, encouraged me to try some new things. I finally contacted Joslin and was provided with an alternatives I could submit.
For future reference, they need something in the file that "documents" the diagnosis date/year. In my case, I sent a copy of my 2012 physical report from my current PCP, which stated the year in which I was diagnosed. I explained that I had told the doctor this, and she said she knew no one would lie about this, they just needed some documention.
So looks like I really will get my medal this year. Thanks again for all the help!