Thomas Brenndorfer is currently the North American RDA Committee representative to the RDA Steering Committee. He is one of the Canadian representatives on the North American RDA Committee, representing the Canadian Committee on Cataloguing. Thomas began his career in librarianship in 1989 at the National Library of Canada. He also worked at the Supreme Court of Canada Library as well as the Canadian Forces College Library in Toronto. Since 1994, he has worked as a cataloging librarian at the Guelph Public Library, which is just west of Toronto, Canada. His interest in cataloging and library systems led to providing presentations and writing guides to FRBR and RDA starting in 2006. Ten years later, in 2016, his book RDA Essentials was published by the American Library Association.