The Jessup Dimension

Does anyone know the answer to this? Just recently, Andy Colvin republished the book, The Jessup Dimension by Anna Genzlinger , about Morris Jessup and the Philadelphia Experiment.

The original was published in 1981 by Gray Barker's Saucerian Press.

However, I have a different copy, which is basically a photocopy of Barker's original (minus the original cover; see the photos).

Was this third version I have also published by Barker or by someone else?

There's no other publisher name etc on this copy. I've had this for around 25 years, but can't remember where I got it from.