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A Chicago-based freelance writer, traveler and the author of “On the Wings of the Hummingbird,” a blog about joy, Mary Ellen Sullivan wrote about the arts, music, travel and women’s issues, with a specialty in health care, for more than 30 years. She was the author of the best-selling book “Cows on Parade in Chicago,” as well as several travel guides. Mary Ellen passed away in March 2016. You can read about her extraordinary life here.More Posts By This Author