i09 have talked to Eric Tan on his retro poster designs for WALL•E, Ratatouille and The Incredibles as well as other projects.
A lot of the creative leads up at Pixar are huge fans of the Disneyland attraction (or ride) posters. A lot of the ones from the 60’s were done in this very simple, colorful style. In fact, you always come across a few pinned up on the walls when you walk through the halls of Pixar.
says Tan. It’s a very interesting article, so take a read here.