Accompanied by text: Magnetic anomaly map of North America ; processing, compilation, and geologic mapping applications of the new digital magnetic anomaly database and map of North America. Includes inset of Hawaii. French, English, and Spanish. Also available via the Internet from USGS Web site.
North American Magnetic Anomaly Group
Relief shown by spot heights. Depths shown by gradient tints. In French; some notes in French and English. "Copies of this map are available in English. Quote MCR 31." In lower margin: Canada. Bibliography. Includes notes and distance table. Insets: Aleutian Islands (Alaska) -- Hawaii -- Physiographie de l'Amérique du Nord. "MCR 31F."
Canada Centre for Remote Sensing. Geoaccess