And that was in the 80s.
I went looking online, but while there are lots of books by Craig Anderton describing how to make pedals, I couldn't see any that old.
Anyway, I thought it was outrageously cool that he was building his own pedals in the 80s and cooler that it was with Craig's guidance. I'm guessing knowing him that it could have been before 1984, but I'm not sure.
I asked if he had the book and he said he had borrowed it to do the project.