There's nothing much (really nothing) online via a simple search for "the willie." Speaking of items I have, The Cockroach Hotel was published by Tom Kryss, along with There is What Left to Understand About a Light Which is not Able to be There or Lone Goldfish in a Tank of 659 the Trench Principle Without Foreplay (the prevalent opinion is that this is not really the title of this work, for what that's worth; but it is better than Come On In! in my book) and a Tribute to Jim Lowell.
There is What Left to Understand contains a letter and a poem from "willie" with no other attribution or biography. Cockroach is all willie, and nothing is to be found in the Tribute to Jim Lowell from aforementioned willie. But, for some reason, I really like the T. Kryss work; if only for the addition of silk-screened or letter-pressed prints in an early mimeo effort. Plus, the Jim Lowell book (he distributed Buk's The Genius of the Crowd in Cleveland in 1966 and was incarcerated for doing so) is part and parcel of why censorship not only sucks, it needs to be spoken against as often as we can do so. A few major efforts worked in past decades (Howl comes to mind), but we can't let them lie. Someday, those arguments may need to be made once again, and perhaps more vociferously.
Sorry for the ancillary info, but my point was that I looked for more info on the willie and ended up finding out how much I dig these early small press renderings.