Thanks for the comments. Any other history lessons? Give us a stroll down memory lane. Also, please watch the short video, as it already explains a lot of the history of Volume II. The specific question I have remaining is what was Volume II between 1952 and 1964.
Notes from video if you refuse to watch it:
1) I have a 1949 Volume 2. It was the Standards.
2) I have a 1952 Volume 3. It was the Standards (I'm guessing at this time they shifted the standards from Vol 2 to Vol. 3)
3) I have the first edition UMC. It was 1967. It is labeled as "Volume 2" So was the 1970.
4) In 1973 they dropped the "volume 3" from the standards and the "volume 2" from the UMC. "volumes" didn't come back until 1994.
So what lingers unanswered is what became of Volume 2 in 1952 when they decided to shift the Standards to Volume 3. It seems that this would have been done to accommodate a new idea for Volume 2. Maybe that idea was the UMC, but then it took more than 10 years to make it happen??? HMMMM.... I think there may be more to it.
If there was no one around from that time on this board to answer this question, then it makes my desire to answer the question that much more important.
We are slowly loosing our history and sense of "how it all began" in the new generations of code and code professionals.