Is This What the Grocery Store Looked Like Along The "The Long Desolate Road".?
… Perhaps Enter The Café, And Go Under The Rusty Roof,

"At one stretch in the long desolated road we see an isolated grocery store.
... Inside, in back, we find a place to sit on some packing cases and drink canned beer.
... The fatigue and backache are getting to me now. I push the packing case over to a post and lean on that.
... Chris’s expression shows he is really settling into something bad. This has been a long hard day. I told Sylvia way back in Minnesota that we could expect a slump in spirits like this on the second or third day and now it’s here. Minnesota—when was that?
... A woman, badly drunk, is buying beer for some man she’s got outside in a car. She can’t make up her mind what brand to buy and the wife of the owner waiting on her is getting mad. She still can’t decide, but then sees us, and weaves over and asks if we own the motorcycles. We nod yes. Then she wants a ride on one. I move back and let John handle this.
... He puts her off graciously, but she comes back again and again, offering him a dollar for a ride. I make some jokes about it, but they’re not funny and just add to the depression. We get out and back into the brown hills and heat again."

Watauga, SD. Mark Richardson says, in his new book, that he thinks he found this store as he followed the ZMM Route. It was in Watauga, SD, a town that was half way between Macintosh and McLaughlin. Although I was not able to identify what he saw, this story & location was found by Gary Wegner, who said “If you use “Street View” when you click on this link [below] you might be able to pinpoint the store:”
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(Photo = GoogStVu IsolatedGroceryStoreWatugaSD UnderRustyRoofByBrendasTumbleweedCafe1 ...... ZMM Page = 050 ...... WayPt = 062m ~2000ft) The Above Google Street View (GSV) Was Captured At US-12, Some~200 feet SE Of Red Pinpoint Of This Google Map.