Comment from Susan L. Yost
Thank you for inquiring about the usage of images from ESJ #9.
It is perfectly fine for you to post the schematic drawings and photo from page 23. We greatly appreciate the referral link. I will send you a better image scan in a bit.
Cheers,
Susan L. Yost
Charles A. Yost Research Library & Archive
She not only sent a better scan of the circuits,
but also a colour image of the Vacuum Tube Tesla Coil Drive.
So the blog post has been updated.
Huge thank you to Susan L. Yost.