The first major expansion of COTTONWOOD MALL enlarged the South Wing with new inline store space and a full-line J.C. Penney. Above, we see a newspaper advert from April 1969, which announces the grand opening of said Penneys.
Advert from the J.C. Penney Company

The mall's existing anchor, ZCMI, placed this "Welcome Neighbor" ad in April 1969 editions of local newspapers.
Advert from the Zions Co-operative Mercantile Institution

During the 1968-'69 expansion, some of the mall's inline stores relocated into the South Wing. This left empty space in the original structure; some of which was filled by an expansion of Zinik's Sporting Goods. The grand opening of their newly-enlarged (20,000 square foot) store was commemorated in this advertisement from September 1969.
Advert from the Horman Construction Company