Captain Beefheart

Don van Vliet, a.k.a. Don Vliet, a.k.a. Captain Beefheart was name-checked on the cover of "Freak Out!" (1966) under the heading "These People Have Contributed Materially In Many Ways To Make Our Music What It Is. Please Do Not Hold It Against Them". He is also pictured in the collage on the "We're Only In It For The Money" (1968) cover. And he is name-checked in "The Real Frank Zappa Book" (1989), of course.