L. Ron Hubbard 
Crossroads 

Frustrated with a government that pays him to bury surplus produce in order to "fix" the economy while city folk starve, farmer Eben Smith decides to take matters into his own hands. He piles up his wagon with ripe fruits and vegetables and sets out for the first time to barter his goods in the big city. Being Eben’s first city trip and all, the way soon becomes uncertain. But when Eben comes across a strange crossroads, he discovers that he’s fallen into a nexus in time. Soon he’s bartering a lot more than goods with different cultures in alternative realities . . . accidentally wreaking havoc and chaos in each.