== Recent death == 

 He passed away on April 25, but the first sentence describing his death is unsourced.  According to a NYT article, he died on April 24.  The article is at the following link: http://www.nytimes.com/2015/05/06/arts/music/benjamin-f-logan-engineer-by-day-and-bluegrass-fiddler-by-night-dies-at-87.html 
 I don't know the proper format for this, so I'm posting the info here.