For those who don't know (and certainly needn't care), the manual is a big book, a list price $75 book, that standardizes everything in the book publishing process from the smallest punctuation to the largest production demands. Newspapers don't use it; they follow the Associated Press style guide. Medical publishers generally follow the AMA's style guide, I believe. I own those, too. And then there's Words Into Type, a sort of rival of CMS, but not given to as many editions. It's often used as a supplement, because there's nothing a 1,200-page cinder block of a book needs more than a supplement.
Even at such an early stage, “the University Press style book and style sheet” was considered important enough to be preserved, along with other items from the Press’s early years, in the cornerstone of the new Press building in 1903.That sheet grew into a pamphlet, and by 1906 the pamphlet had become a book: Manual of Style: Being a compilation of the typographical rules in force at the University of Chicago Press, to which are appended specimens of types in use—otherwise known as the 1st edition of the Manual. At 200 pages, the original Manual cost 50 cents, plus 6 cents for postage and handling.
It's the bible for most book publishers, as the Diagnostic and Statistical Manual of Mental Disorders is for the headshrinkers, or the Pocket Pal is for graphics and reproduction guys. (You may insert your Pocket Pal joke here.)
The CMS doesn’t change much between editions. The 17th was published in 2017. The last few have been busy keeping up with technological changes. And yet it's important to have the most recent one so that we're all quite literally on the same page. If I get into a fight with an editor or writer over the capitalization of celestial objects, I want to refer them to 8.143 (the 143rd section of chapter 8) to show that aurora borealis is set in lowercase. As you can see, the CMS plays referee.
Despite this, I used to work at a company where the copy chief absolutely refused to use the 15th edition, demanding that we galley slaves stay with the 14th. I do not know why he had it in for the 15th, but he was not kidding. Down with the 15th! was his cry. Soon after I was laid off from that job, the 16th edition came out. I am still afraid the shock may have killed him.
I haven't looked at the 18th much yet. I worry that they've decided to stuff it with a bunch of politically correct stuff -- how to handle newly coined pronouns, how to address someone who identifies as a wallaby, that kind of thing. It can’t be helped. At least the book remains a noble defender of the serial comma.
Now that I've whipped you into a Chicago Manual of Style frenzy, you will be glad to know that you can buy merch.
The number on the back makes me laugh. Like you play third base for the Chicago Manuals of Style. Can’t tell the players without a scorecard.