found: The Celtic fiddle festival, 1993:insert (John McGann, Boston-based folk guitarist)
found: U.S. copyright file, Mar. 31, 2005(claimant statement: John P. McGann, 1959-)
found: Boston globe WWW site, Apr. 30, 2012(in obituary dated Apr. 29, 2012: John McGann; d. Apr. 5 [2012], Jamaica Plain [Boston, Mass.], at 52; mandolinist; multi-instrumentalist; prof. of strings, Berklee Coll. of Music; played bluegrass and jazz)
found: Social Security death index, June 17, 2013(John P. McGann; born September 12, 1959, died April 5, 2012)
notfound: Encycl. of folk, country & western music, 2nd ed.;ASCAP biog. dict., 4th ed.