First the dust itself:
Here are photos of the people, their dwellings, and the environment in which they attempted to survive.
*This became one of the most famous images of the period. Rothstein was accused of fakery because he requested the father and sons to take the poses that you see. Such posing was ubiquitous in FSA images by virtually all its photographers and was both widely known and perfectly obvious; the photographers didn't claim otherwise. There's truly no fakery here, just the capturing of a compelling image by the discerning eye of a master photographer.
**As above, it seems irrelevant whether the photographer asked him to take this pose or he did it without prompting.
***This image became well-known when it was revealed that Rothstein had moved the skull from another place so that he could capture it in the same image with the cactus. Critics claimed that his intervention sullied the purity of the photo and invalidated the meaning that it conveys. This now seems to be an empty argument, partly for the reasons given above.
**** It was claimed that the farmer would not have used that type of shovel for post hole digging, and thus that Rothstein was again engaged in some kind of fakery. The criticism is weak (why does it matter what shovel appears?) and probably unjust as well since that was just the sort of shovel one would pick to work with light dust.
***** A Kincaider was a farmer (men who came to be known as "sod-busters") who took advantage of the Kinkaid Act of 1904 to claim a homestead in Nebraska.