This 1945 book is essentially a reprinting of MLJ's Zip Comics #46, from May, 1944, as all its stories were all taken from that book. Only the adverts and an informational page were different. It makes no sense to me that MLJ would lease stories and cover art from books issued from less than one year to a little over one year before, to an unrelated publisher, who only published a few comic book very short-lived series, sporadically. I rather think that Green Publishing bought the plates of artwork at bargain bin prices from a printer who MLJ had used, a year before, but were no longer using. It appears that Green, like Norlen and I.W./Super Comics, obtained ALL their artwork in that same manner.
Link to the book:
Roly-Poly Comics 01