In the Travel Agents sketch, Eric Idle was original scripted to say "What a silly bunt" (replacing C with a B) as later appeared on the Monty Python LP "Previous Record". BBC censors simply cut this line from transmission in the original broadcast. The DVD version of the show restores the line uncensored.
The American Psychological Association Style Guide currently uses Anne Elk (Miss)'s Theory Of Brontosauruses as an example of how to cite scholarly articles from periodicals.
French author Marcel Proust, whose name and works are referenced frequently in this episode, is referred to as both "PrOOst" and "PrOWst" throughout the show.
(Miss) Anne Elk's odd speech pattern was inspired by David Sherlock, Graham Chapman's longtime partner.
When this episode aired in 1972, the idea of multiple expeditions to Mount Everest was played for laughs. Half century later, climbing Everest has become commonplace, with several hundred tourists climbing the peak every year.