From the Dec. 29, 2014, National Geographic Online "On the 'Grapes of Wrath' Trail, the Dust Bowl Still Resonates" by Barbara Paulson.
The author of the article is retracing Steinbeck's route he described in his famous book from 75 years ago. This is the first of three parts.
A map accompanies the article which features towns not on Route 66: Sallisaw (on the east border of Oklahoma); Hooker, Guyman and Boise City (in the Oklahoma panhandle and Liberal, Kansas, right by the Oklahoma panhandle. This made me want to know what these towns had to do with the book.
The book is a depiction "of industrial agriculture squeezing out small farmers, climate-driven environmental woes, and migrant workers at the mercy of big landowners."
Sums It Up pretty Well. --RoadDog