Fonds reflects MacMillan's career as a professor and librarian at Mount Royal University. The fonds is arranged into three series which document her teaching, scholarship, and service activities. Other records in the fonds reflect MacMillan's other academic activities and research interests, and include annual reports, a promotion dossier, news clippings, and video recordings.
Fonds illustrates the planning and design of the Riddell Library and Learning Centre, which was led by Shepstone as University Librarian. The fonds consists of three series which documents furniture planning, architectural, and electrical drawings, new library planning, and administration for the Riddell Library and Learning Centre and the Mount Royal College Library. Other records document architecture firm's planning for the RLLC and Mount Royal College planning. The fonds also contains publications, memorabilia, and artwork.