I'm a bit of a John Steinbeck fangirl, but I had never heard of
The Harvest Gypsies: On the Road to the Grapes of Wrath until it popped up in today's Kindle US Daily Deal, for $1.99. And it's matched and discountable at Kobo US - note the "partners" code for 40% off is still working, so if you have a VIP membership and use the code, it's only $1.07.
Per the blurb,
Harvest Gypsies is a collection of seven articles (with accompanying photos) about Dust Bowl migrants that Steinbeck wrote for the
San Francisco News. Unfortunately the sample ends while it's still in the introduction, which was written by Charles Wollenberg, but still, for $1.99 or less, how can you go wrong?
Kindle US:
https://www.amazon.com/dp/B07NCB9Z5J
Kindle US/Smile:
https://smile.amazon.com/dp/B07NCB9Z5J
Kobo US:
https://www.kobo.com/us/en/ebook/the-harvest-gypsies-2
Note that Steinbeck is in the public domain if you are lucky enough to live in or visit Canada or the few other countries with reasonable copyright laws. However this title is pretty obscure, and neither Faded Page nor PG Canada had it when I looked.