Trove of vintage audio manuals

[PaulD]

I just found this Library of Congress archive of audio & recording manuals. I had no idea it existed. There is some high quality distraction in here!

http://lcweb2.loc.gov/master/mbrs/recording_preservation/manuals/

 

[PaulD]

In a similar vein, I just found this collection Swiss Sound from Studer-Revox until about 1989:
https://www.reeltoreel.nl/studer/Public/SwissSound/

Including this very useful index by device: https://www.reeltoreel.nl/studer/Public/SwissSound/SwissSound_Contents_by_Device.pdf

And an index of the most interesting articles: https://www.reeltoreel.nl/studer/Public/SwissSound/SwissSound_Contents_Chrono.pdf