Update: See update note at end of post!
According to WTVA-Tupelo, last summer work was to begin on the restoration of this 1920s-1930s advertising mural. Apparently, "soon" did not mean within the next 4 months, as that has been how long the mural has been waiting since the big news announcement. Oneeta flour was listed in the 1906 Official Gazette of the United States Patent Office, although I can find no other references to it. Note the shape to the left of Confidence Flour? That is supposed to be a lion. Whitworth and Akins, according to WTVA, were a local grocery store.
Another follow up note: The mystery (one of them, at least) is solved. The database does not identify if it is West Marion, or East Marion, but additional sleuthing reveals that the buildings referenced in the database for MDAH/HRI are on East Marion, thus, not applicable to this row of buildings. See the next post for information about what is really at 16 East Marion!