When updating the page for Swiss Jim I found an album that confirmed some doubts about earlier bdsm art I had shared, at that time not connected to an artist.
Suddenly I remember having found art tributed to Carlo that looked like the same style but then again it was a little bit different. None of the artworks have a signature, which makes it more complicated to determine the artist.
When this little mystery interests you, be sure to browse both artists. I also remembered sharing two artworks that looked the same but were from different artists, one with the signature from Carlo, the other from Sadie Mazo. So this became a little bit of a mystery, untill (with thanks to a fan of the site) I found out some artworks were wrongly attributed to Carlo (the written name on the cover must have been the start of the mislead).
So the colored ones I attached to Carlo (first images with the blue border) are in fact from Sadie Mazo.