Letraset revolutionised the World of typography with their Instant Lettering, which were dry rub-down transfers. But Instant Lettering wasn't perfected until 1961. The original idea was thought up by Dai Davies, & implemented by Fred Mackenzie, & at its creation in 1956 it wasn't in the form of dry transfers at all, but an ingenious variation on the traditional waterslide transfers which had been around since the 1860s at the latest.