The science professor's note of resignation reads:
"SHALOMAR OBSERVATORY
I resign! When I begin to see things like this, it's time to take up turkey farming.
J. Frisby
DIRECTOR"
The scene where J. Frisby sees Saturn, Jupiter, stars and a quarter moon, before he writes his resignation note, has been cut from more than half of the versions of this film.
Shalomar Observatory is a pun on the famous Palomar Observatory in California.