Nellie is a noted artist and creative advertising consultant who started her own advertising agency called GALEN and nellie, which won numerous advertising and public relations awards including the prestigious Cornhusker Award. Her advertising work is also recognized internationally for its creativity. In addition to her own agency, Nellie has worked for some of Omaha's largest ad agencies. A leading Omaha artist, Ms. MacCallum is also active in community affairs, including serving as Vice President of the Omaha Sister City Association.

Nellie is a noted artist and creative advertising consultant who started her own advertising agency called GALEN and nellie, which won numerous advertising and public relations awards including the prestigious Cornhusker Award. Her advertising work is also recognized internationally for its creativity. In addition to her own agency, Nellie has worked for some of Omaha's largest ad agencies. A leading Omaha artist, Ms. MacCallum is also active in community affairs, including serving as Vice President of the Omaha Sister City Association.