The Tree of Tubes

I saw this picture (reversed black to white) on Farcebook:
from the second issue of Electronics magazine, May 1930

source: https://www.worldradiohistory.com/Archive-Electronics/30s/Electronics-1930-05.pdf

And this Westinghouse version, too:
These thermionic trees remind me of my childhood.  The Sunday Milwaukee Journal had an outdoor section which often featured a painting by Mel Kishner.  The fall/winter landscapes would often have detailed stylized trees like this one:
Homecoming

This was so frequent that if anyone in my family saw a similar tree IRL or a photo or a piece of artwork they would simply remark:

"Kishner"   :)

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm