licenses."

The only one that had some reciprocity was the 2nd Class Commercial Telegraph Operator and Amatuer Extra which both had a 20WPM test, but code credit was all that was accepted, the tech part, while similar, was not the same, mainly due to totally different regulations.   Probably a lot of modern hams have no clue what the older tests were like, but picking up any of the 1950/60 License Manuals, by the ARRL, Ameco, Allied would be an eye opener for most today, especially those who buy commercially made dipoles and  coax with the connectors installed.

Charlie, W4MEC