He Chased a Bear into a Cave
Brother Dave - Dave Burkhart - starting working for WDI (Walt Disney Imagineering) in 1967 as an artist/model-maker. He helped in the building of architecture and models, including full scale props and sets. He worked on attractions including The Haunted Mansion, 20,000 Leagues Under the Sea, and the Swiss Family Tree House. He also worked on the Tokyo Disneyland Project before he left Disney to become Creative Director for Universal Studios to work on their Japan project.
You can read his full bio here, where he works for a different theme park creating company!