A colophon gives information about the publication of a book: usually the author, title, publisher (or printer or bookseller), and date.

In older books, the colophon usually appeared at the very end. In modern books, it's usually on the title page.

The word colophon also often refers to the emblem or logo a publisher uses — a ship, an open book, a torch, a tree.

From the Guide to Literary Terms by Jack Lynch.
Please send comments to Jack Lynch.
Note: This guide is still in the early stages of development.
Three question marks mean I have to write more on the subject. Bear with me.