I have attached some pages from a Marine Corps Manual from WW I era. It was given to me from a friend of mine (who happens to be a Captain USMC who no longer serves) and it was given to him by a neighbor whose father was in the Marines Corps long ago. Maybe you could pick a few pages to show. I know Ddick and Gunny Rousseau might still have theirs!
4th FSSG, 4th Maint Bn, 4th Marines