From Garth Matthews, History of American Crumplers (his ref J1.4-M2.1#b-1C##A):
[2003] He joined the US Marine Corps after graduating from Riverside Highschool in West Virginia
[S90946] Garth Matthews, Matthews, History of American Crumplers, (Unpublished manuscript, sent to Craig Walsh 14 Nov 2026), Ref J1.4-M2.1#b-1C##A, Chapter 4: John Crumpler Snr and the J1 John Jnr line.