Wendell, there's a listing on Facebook market place that shows a pamphlet by Keith. Not at all sure it's 'the one', but I've not seen anything else.
updated by @dave-d: 03/26/21 10:52:27PM
Hi everyone, I need your help. I was fortunate enough to recently acquire a two DVD set of How to Build a Dulcimer by Keith Young. The booklet that originally came with the DVD set is missing. Does anyone know where I could possibly get one or a copy of one? I may never build a dulcimer but since I own a Keith Young dulcimer, the DVD is almost like getting to meet Mr. Young. I realize these aren’t common and would appreciate any help anyone can give me, thanks.