The 39 Steps (1935) - trivia

The music that the chorines dance to after Mr. Memory is shot is "Tinkle, Tinkle, Tinkle" written by Harry M. Woods.
The 62 imported sheep, upon arriving at the sound stage, immediately went to work on the bracken and bushes that had been brought with them. The infuriated crew had to replace the real plants with ones hastily bought from a local nursery.
The Screen rights to The 39 Steps from John Buchan, only cost Hitchcock £800.
The 39 Steps was bought to the screen for only £58,550.
The character or Mr. Memory was based on the real life Jimmy Bottle (stage name of "Datas"), a music hall memory man whose catchphrase was "Am I right, sir?"