Actually, my stuff was xeroxed from something called "The Nursing Home Directory", a very expensive industry publication that a friend had at work(she managed a facility, and actually got me started on the idea)--

As to chord changes for swing and jazz standards, the guitarguy stuff has lots of extraneous, if not outright wrong chords. For chord changes that actually work, go to Ralph Patt's Vanilla Book he played in big bands for 20 years, including Benny Goodman, Les and Larry Elgart, The Glenn Miller Orchestra, Frankie Carle, and Neal Hefti, and knows that of which he speaks--