Mary A. O'Donnell (better known as M.A.) first began working at our Broad Branch Road campus in October 2015, at which time she was hired as the Membership Services Coordinator for the Geochemical Society. She left that position in January of 2018, and returned in November of this year on a temporary basis to assist Shaun Hardy following Mary Ferranti's departure. She was then hired as Carnegie's Library Technical Specialist/Digital Asset Curator.