OK, I shall unravel that mystery:
In the 70s Leitz published a guide "
Self-Enlarging Made Easy" in German.
The weird thing though was that it was not in text-book style but made up as
cartoon. With all that cast I listed above, with the then new Focomat V35 being central. Unique. And Leitz then was the last company I expected such.
I got it in hand when I used a brand new Focomat V35 back then. I thought it had been delivered with the enlarger. May be. But it has a protective charge imprint, thus must have been available loose.
All those years from memory I thought it was the enlarger manual in cartoon form. But meanwhile I got a sample in hand again and as said it is an enlarging (and paper processing) guide.
The idea and text is by Günter Spitzing, photo all-rounder and renown photo-author back then. The graphics are by a lesser known graphic artist.
Weird.
Even more as Jane as acting person got yello-blond hair. But in the photo said to show her she is brunette. A matter of the author, who brought in all photos to be inserted into the graphics not communicating withb the graphic artist.
Not a good idea in a guide about photography.
And that unnerving talking parrot tops it all.
http://thumbs3.picclick.com/d/l400/pict/171361762562_/Leitz-SelbstvergroSsern-leicht-gemacht-Ein-Comic-ber.jpg