I love this! I first encountered it in my copy of La Linea Viennese, which I picked up from Edward R. Hamilton a few years ago at a steal (note that the single used copy for sale at Amazon is $95!) A friend of mine who, like me, is an artist was flipping through the book, and when he saw this, he pointed out to me that it would make a great t-shirt design. I have to agree. Maybe someday I’ll get this printed on a shirt. I’ve done it before with artwork I liked.
Anyway, this is by the brother-in-law art team of Heinrich Lefler and Joseph Urban. I have definitely seen Urban’s name in Jugend, and I’m fairly certain Lefler has contributed pieces to it as well.