head bolt torque and block

[Denis Sweeney]

Well that fairly scares the pants off me, but it also raises more questions, like the validity of the article in the Companion.
Was this an authentic Austin directive to dealers printed in the Austin Service Journal January 1939 as the article portrays, or a figment of someone’s imagination.
Does anyone have copy of such original directives??
If it is an original directive it then raises the question as to why the torque stated was correct/worked back then in 1939 and not now?? Quality of materials??
This is not being argumentative just curious