Catastrophe in Substitute Springfields!/References

General

References/Trivia

Appearances

Gags

Credits

Quotes

Cultural references

• The story's title is a reference to the "Crisis on Infinite Earths" storyline from DC Comics.
• On the last page, when the panel displays all of the substitute Springfieldians, a substitute that looks remarkably similar to Fry from Futurama, Groening's other television series.