The high-tech world of the mid-thirties according to Churchman cigarettes. Forty-eight larger (68 by 53 mm) than normal size cards that covered a fascinating range of mechanical and electrical developments mixed in with some that had been around for years: the Queen Mary going into the Southampton graving dock.
Fortunately not many cards were devoted to weird transport (the Dynasphere) which could provide a set of its own. Instead the subjects chosen reflected more of the biggest or the strongest in the industrial world.
Mitchell’s cigarettes issued a set of fifty black and white cards in 1936 called the World of Tomorrow which had looked into the future based on some of the ideas in the Modern wonders set.