“Food storage cellar, Deshee Unit, Wabash Farms [Cooperative], Indiana,” May 1940, by John Vachon, via Library of Congress Prints and Photographs Division.
I found the preserves in the cellar. . . .
The black raspberries were still
delicious, each cluster
burning like years in the brain.— Michael Waters, from “Preserves“
enclos*ure 
That HAT!
Looking beyond it, I realize how the entryway to the “cellar” would be one of the only sheltered spots in a flat, flat landscape…
I think she must have dressed up for the government photographer.
Mark’s dad built a similar root cellar into the hill next to their retirement house, which he also built.
This is interesting because they seem to have made the hill just for the shed.