In Hammond's bedroom/office you can find some fascinating pictures. Hammond has two copies of Henderson's Stegosaurus creekbed herd (foreshadowing, perhaps?) hanging in his office:
![Image](https://i.imgur.com/bLTPzDn.jpg)
![Image](https://i.imgur.com/FMC7LyS.jpg)
![Image](http://65.media.tumblr.com/tumblr_m4tkc7ohdW1rsiohpo5_1280.jpg)
And another Henderson drawing, of a pack of Allosaurus attacking an Apatosaurus, hanging over his bed:
![Image](https://i.imgur.com/UEXiWIq.jpg)
![Image](https://i.imgur.com/HgzH4PV.jpg)
Also in Hammond's office, is Jurassic Park Visitor Concept art from the first movie:
![Image](https://i.imgur.com/sEPXecp.png)
![Image](https://i.imgur.com/scBLLgM.jpg)
As well as concept art from JP The Ride:
![Image](https://i.imgur.com/trHwpI0.jpg)
![Image](https://i.imgur.com/SVPqDNv.jpg)
Eddie's Shop is another gold mine for hidden concept art!
These shots have concept art of the trailers on Sorna:
![Image](https://i.imgur.com/2NJwIlB.jpg)
![Image](https://i.imgur.com/yRIuyK7.png)
![Image](https://i.imgur.com/xfYc9rS.jpg)
![Image](https://i.imgur.com/7R5OtjM.jpg)
And there's 4 pieces of concept art in this shot alone!
![Image](https://i.imgur.com/pblCInR.jpg)
![Image](https://i.imgur.com/1EZnNSC.jpg)
![Image](https://i.imgur.com/taBkFuv.jpg)
![Image](https://i.imgur.com/gGB7qXr.jpg)
![Image](https://i.imgur.com/Zm5KJJy.jpg)