These two undated, unmarked real photo postcards of the border between Arkansas and Missouri. After a little sleuthing, I determined that this is Highway 61, just east of Blytheville, Arkansas.
If I knew enough about cars then I could probably put a date on these postcards.
There is nothing left on the Missouri side. The Texaco and over service station are no more.
There is one solitary building on the Arkansas side. It’s hard to see in the postcard as it’s semi-obscured by the turn arrow and 25mph sign (with a Budweiser sign) on top still stand but nearly everything else is long gone.