Corythosaurus is, as a popular dinosaur, strangely absent from culture. It has been popular enough to make it into paintings, sculpture, and children's shows, but it is missing on the internet overall. It has shown up in video games such as Jurassic Park's Operation Genesis (I wish there had been a less ridiculous version, but you live with what you can find online if you don't own the game):
There is also, of course, Spore. We see it so much here I don't really need to introduce it too heavily:
There are only a few books and there are toys as well. I'm not going to post specific links to those today.