In Charlie and the Great Glass Elevator , the Oompa-Loompas give Wonka a letter from President Gilligrass .
The Oompa-Loompas give Wonka a letter from President Gilligrass , congratulating the occupants of the Great Glass Elevator on saving the lives of the shuttle astronauts and hotel staff and inviting them as the guests of honour to a White House dinner .
Charlie and the Great Glass Elevator