Non-Yale resources:
- BIBCO Standard Record (BSR) for Cartographic Materials
- Special Instructions and Tables of Subdivisions for Cartographic Materials (LC)
- Geographic Cutter Number Table G1548-G9804 (LC)
- Map Cataloger's Toolbox (Buffalo)
- Map Librarian's Toolbox (Western Assoc. of Map Libraries)
- DCRM(C)