Mary Concannon stage managed many Theatre Works productions including Nunsense, A Christmas Carol, The Sunshine Boys, Over the Tavern, Laughter on the 23rd Floor, Forever Plaid, and Jesus Christ Superstar. She also appeared on stage as Angela in Spreading It Around, Audrey in Belles, and Miss Amantha in Bull in a China Shop. Mary worked with Barker Plays, City Nights Dinner Theater, and Yankee Theatre Wing, and was a docent and volunteer at Hearthside House in Lincoln.