The Box from Japan, by Harry Stephen Keeler(epub/Kindle/pdf)

At the time of its publication, 1932, this was the longest mystery ever written. Would you believe, 313,000 words -- many of them in a strange Hispano-German dialect. It's a simple story about world war in 1942 between an alliance between Germany, Japan, and Mexico against the US and the rest of the world. 3D TV figures prominently, as well as a cactus that proves to be the world's most perfect food source. A remarkable novel, far ahead of its time!