As the March of Dimes' 1955 national poster child, Mary criss-crossed the country to meet with famous politicians, athletes, and celebrities to help promote the work of the foundation — experiences she recounted during her on-air appraisal in Myrtle Beach during the June 2012 ROADSHOW event.

Her tenure as poster child was also significant in that 1955 was the year that saw the landmark release of the Salk vaccine. A foundation with a proud history of public education and research to help fight polio, the March of Dimes celebrated its 75th Anniversary on January 30, 2013.