This video from 1957 of a rock making factory in London is astonishing. The letters in rock seemed magical enough anyway but now they seem even more extraordinary. Sometimes things are made in the most unexpectedly simple way. In the case of rock, a bit of scaling makes it all work perfectly: build really big letters and then stretch them until they’re small. (I also think the voiceover and background music adds a little extra charm.)
Website link: British Pathé video clip archive