Classical Mythology (4th ed.), Morford and Lenardon, 1991.
ETA, after this photo has made the rounds of Pinterest and, apparently, made bibliophiles the world over cry*:
Yes, I WROTE ALL OVER THIS BOOK. I used it for several classes, and I learned or discovered something new each time I read it. There is nothing sacred or special about this book, aside from the fact that it contains many of my notes. It is not intrinsically valuable. If you want one of your own, you can buy it used on Amazon for 1 penny. Only, you know, it won't be special like mine, because you won't have written in it. Yet.
* And if this moves you to tears, you should see my copy of Lattimore's translation of The Iliad. YOU WILL WEEP.