Here's Nelson's Hallmark in July 2003. The store's fixtures are still inside. When the mall opened in 1961, this space was occupied by Flagg Bros Shoes. At one point, Nelson's Office Supply was next door.
Here are two photos of the interior, taken through the glass windows.
Red Warhol managed Nelson's Hallmark for nearly 20 years. She's shown in this picture on the left, along with who we believe is Mary Berny, who also worked at the store. (Thanks to Bonnie Warhol for this information!)
Betty and Joe Spano of NE Minneapolis in front of Nelson's Hallmark. Betty was an employee of the store. (photo courtesy Apache Plaza)