Four years, huh? I'd be willing to wager it's been sitting on the shelves for three years while Swords waited for Dick Clark to die, and then got tired of waiting. (Books are often held until the celebrity subject passes, and then released a few weeks later -- I worked on a few like that.)
A little background on Charlie Gracie's "Butterfly:" he performed the song, but it was written by two others, so his royalties wouldn't have been all that great. It did hit #1, but it's a pretty standard rockabilly tune. And Andy Williams hit #1 with it the same year. It probably doesn't help that Cameo-Parkway Records pretty much stopped selling much of its back catalog for 35 years or so (after Allen Klein bought the company in the late 1960s). Dick Clark was a huge boon to Cameo-Parkway artists; since Bandstand was in Philadelphia and so were they, bookings were natural. When Bandstand left for Los Angeles, Cameo-Parkway started rolling slowly downhill.
I do know that Dick was occasionally a pain in the tuchus to those who worked with him on other projects (we had an American Bandstand book project in the late '80s that we let go), but that's not uncommon to celebrities for whom some projects are important emotionally, not necessarily financially (see Nesmith, Michael). But, as noted before, he's a businessman, and never had any claims against him, even though some big names went down in the payola scandals (see Freed, Alan).
