This may be of no interest to anyone but myself, but I’m going to share it anyway. We’ve talked many times as a group about ISBN numbers, Wal-Mart’s involvement of the evolution of UPCs and copyright pages and what info you can glean from the bits listed there.
While researching an unrelated matter on the web (isn’t that always how the most interesting things are discovered) I found the following:
Q. I would like to know what the numbers on the copyright page represent that are written:
14 13 12 11 10 09 08 07 06 05 1 2 3 4 5, for example.
A. Impression Line. The first group of numbers refers to years (2014 to 2005), and the second group indicates the impression number. The line tells the reader that this is the first impression, printed in 2005. If the next impression were printed in 2007, the printers would mask the numbers 05 and 06 in the first group and the number 1 in the second group, so the following line would appear:
14 13 12 11 10 09 08 07 2 3 4 5
This would tell readers that it was the book’s second impression, printed in 2007, and it could be done without retypesetting the copyright page.
Now I have to go back to what I was looking for in the first place.