On 02/28/2017 05:21 PM, Jon Auringer wrote:
 Chuck,
 I had the same display issue. Uncheck "Show only display name for
 people in my address book" under Tools-Options-Display-Advanced. 
Jon,
Thanks for the hint!  I'm using the Linux version of Thunderbird, so the
setting isn't under "Tools"; it took me a bit of searching to find it.
In the *nix version, it appears to be under Edit->Preferences->Display.
That seems to have fixed things.
Thanks again,
Chuck