Footnotes to the ARL Annual Salary Survey, 2013–2014 · 165 LIBRARY OF CONGRESS Law Library salaries are included. NATIONAL AGRICULTURAL LIBRARY Library branches included: DC Reference Center. Reporting Period: 10/1/2013. NATIONAL ARCHIVES Library branches included: Survey includes all 44 NARA locations nationwide. www.archives.gov/locations/. Professional determined by the Office of Personnel Management definition reference: www.opm.gov/ qualifications/standards/group-stds/gs-prof.asp. NEW YORK PUBLIC LIBRARY Library branches included: We did not include Branch Libraries. NEW YORK STATE Law and Medical Library salaries are included.