This series contains records documenting Mason's professional development and her service work with various committees and institutions. This includes reports, publications, correspondence, conference proposals, minutes, meeting notes, travel expenses and receipts, schedules, newsletters, and event memorabilia.

Committees and institutions represented in the series include the Rare Books and Manuscripts Section Standards Committee (RBMS) within the American Library Association (ALA), the Independent Research Library Association (IRLA), National Endowment for the Humanities (NEH), the Ethical Standards Committee, and the Lilly Library at Indiana University-Bloomington. The series also includes drafts and publications for International Standard Bibliographic Description (ISBD) and rare book machine cataloging.