In book advertisements, or information included in books with the aim of encouraging the current readers to spend more time and money with the publishers, are a notoriously ineffective form of marketing. This must be why there are so few books actually carry these lines of advertising, although the cost of including them is minuscule. I had to comb through a bunch of books to find the examples below, but once found, they show quite a range of services that publishers advertise, don’t you think?
Here’s an ad from Simon & Schuster marketing their newsletters.
Here’s one from an academic press, featuring visuals on other books published in the same series.
Here’s the third, and probably most common, giving an address and inviting people to write for discounts on bulk purchases.
Here’s one, again from Simon & Shuster, advertising the authors themselves. I had first read that as “bring a live author to your event” and thought “live? lively? alive?”. Ah, the endless hours of fun one has with (very slight) dyslexia.
This last one touches on copyright and the licensing market for various derivative uses one can make of copyrighted materials. This is where one would write to ask — and presumably pay — for permission to reproduce an excerpt of some sort, whether for including in one’s own book or for teaching purposes.