@edgarblythe,
Sallisaw is where the Joad family started out for California. Gore is just west and Muskogee, Capital of the Cherokee Nation, is just North of both. This is in the east center of the state. Oklahoma has such a lot of history for such a small state. This all happened during the Great Depression and the Dust Bowl. Of course, the wealthy increases their wealth in both good and bad times on the backs of the poor.
Albequerque, I don't know if this would be called Populism, but I do know the Novel pursued Unions and the land owners screwing the workers.
I lived through a minor 4 month dust storm era in 1976 and can't believe how someone could go through 3-4 years of those conditions.