Recommended
Tektronix Printed Circuit Boards 1969
Why people recommend it
Shared as a historical look at how Tektronix made circuit boards around 1969, with layouts taped by hand and transferred photographically.
Watch for: A historic process, not a guide to modern design
In their words
Here's a great video from Tecktronix (O-scopes) showing the whole old school process from start to finish, if anyone's interested:
Chris on electronics.stackexchange.com, Aug 2024. CC BY-SA.