Mary Ann Mercante has been at Maryville University Library since 1993. Prior to that, she served for ten years as the Executive Director of the Missouri Library Network Corporation (MLNC) providing OCLC and other resource-sharing services to Missouri libraries. She began her Library career as a paraprofessional in the Chicago Historical Society Library, obtaining her MS in Library Science from the University of Illinois at Champaign-Urbana in 1976. Positions in Technical Services at Roosevelt University and Greeley & Hansen Engineers in Chicago preceded her move to Missouri.