I took my Extra exam in late April, 1967, at the Boston office. My memory is that it was multiple choice, with no diagrams to draw. Think it was 100 questions, and I was so beat at the end that I just handed it over without reviewing it. Also, I had used a 1961 license manual, which had quite different questions, so something changed in the interim. So the “blue book” test may have been phased out earlier than previously suggested.
My best memory is of the code test. They called three of us to the table by the window. I remember thinking it was odd that we all were in our late teens, and one was a YL. The test was a snap. I watched the planes landing at Logan, and still had neatly printed copy - slashed zeros and all. The examiner took the papers and quickly called me to the desk. They had given me the General test. Good practice, though, as I sat the 20wpm test alone with no problem.
John, W1TAG